Sweet Potato Coffee Cake Recipe That'll Wow Your Guests

Name: Sweet Potato Coffee Cake
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Ingredients: 1 ½ cups all-purpose flour; 1 teaspoon baking powder; ½ teaspoon baking soda; ½ teaspoon ground cinnamon; ¼ teaspoon ground nutmeg; ¼ teaspoon ground ginger; ¼ teaspoon salt; ½ cup unsalted butter (softened); 1 cup granulated sugar; 1 large egg; 1 teaspoon vanilla extract; 1 cup mashed cooked sweet potato; ½ cup buttermilk; ½ cup all-purpose flour; ¼ cup packed light brown sugar; ¼ cup granulated sugar; ¼ teaspoon ground cinnamon; ¼ cup unsalted butter (cold and cut into small pieces); 1 cup powdered sugar; 1-2 tablespoons milk or water; ¼ teaspoon vanilla extract

Jump to Recipe

Sweet Potato Coffee Cake Recipe is one of those rare bakes that feels like autumn wrapped in a cozy hug—moist, spiced, and crowned with a buttery sweet potato crumb cake streusel that crackles perfectly under your fork.

If you’ve been hunting for a fall coffee cake recipe that doubles as breakfast and dessert, you just found your new favorite. Plus, it’s got sweet potato hiding inside, so it practically counts as a vegetable serving, right?

I love making this coffee cake with sweet potato on lazy Sunday mornings when the leaves are crunchy underfoot and the house smells like cinnamon and butter. It’s simple enough for beginners but impressive enough to bring to brunch at your friend’s farmhouse. Let’s bake something beautiful together.

Quick Overview

Little Snapshot: What This Recipe Delivers

This Sweet Potato Coffee Cake Recipe combines tender spiced cake layers with a crunchy streusel topping and creamy sweet potato for a moist, flavorful fall dessert or breakfast treat. It’s easy to make, totally bakery-worthy, and tastes like cozy autumn mornings in every single bite.

Why You’ll Love This Recipe 🌸

This sweet potato coffee cake takes less time than sorting your spice drawer and delivers bakery-level flavor every single time.
It’s ridiculously forgiving—no finicky folding or tricky techniques, just mix, layer, and bake while you sip your coffee.
The streusel topping adds that irresistible crunch we all crave, and the sweet potato keeps the crumb tender for days.
According to this study on sweet potato nutrition, sweet potatoes are packed with fiber and beta-carotene—and this recipe proves exactly why they belong in your baking rotation.

Quick Facts ⚡

Here’s the quick scoop on this Sweet Potato Coffee Cake Recipe.

CourseDessert
Prep Time15 minutes
Cook Time35 minutes
Total Time50 minutes
Servings9 servings
DifficultyEasy

Nutritional Peek

Nutrient	Amount per Serving
Calories	385 kcal
Protein	4 g
Carbohydrates	58 g
Fat	16 g
Fiber	2 g
Sugar	38 g

What You’ll Need

You don’t need any fancy equipment to pull off this sweet potato streusel cake. Just a few trusty kitchen tools and you’re golden.

9×9 inch baking pan
Medium mixing bowls (2)
Large mixing bowl
Whisk
Electric hand mixer or stand mixer
Pastry blender or fork (for streusel)
Spatula or wooden spoon
Wire cooling rack
Wooden skewer or toothpick (for testing doneness)

Ingredients

This sweet potato crumb cake starts with real mashed sweet potato, warm fall spices, and a generous blanket of buttery streusel. You’ll divide your ingredients into three simple groups: the spiced cake base, the crunchy topping, and an optional vanilla glaze that makes everything shine.

Group	Ingredient	Amount	Notes
Cake	All-purpose flour	1 ½ cups	Spoon and level for accuracy
Cake	Baking powder	1 teaspoon	Fresh is best for lift
Cake	Baking soda	½ teaspoon	Helps with tenderness
Cake	Ground cinnamon	½ teaspoon	Warm and cozy
Cake	Ground nutmeg	¼ teaspoon	A little goes a long way
Cake	Ground ginger	¼ teaspoon	Adds gentle spice
Cake	Salt	¼ teaspoon	Balances sweetness
Cake	Unsalted butter, softened	½ cup	Room temp is key
Cake	Granulated sugar	1 cup	For sweetness and structure
Cake	Large egg	1	Binds everything together
Cake	Vanilla extract	1 teaspoon	Pure is worth it
Cake	Mashed cooked sweet potato	1 cup	Roasted or boiled, cooled
Cake	Buttermilk	½ cup	Adds tang and moisture
Streusel	All-purpose flour	½ cup	For crumbly texture
Streusel	Light brown sugar, packed	¼ cup	Adds caramel notes
Streusel	Granulated sugar	¼ cup	Extra sweetness
Streusel	Ground cinnamon	¼ teaspoon	Spiced goodness
Streusel	Unsalted butter, cold	¼ cup	Cut into small pieces
Glaze (Optional)	Powdered sugar	1 cup	Sifted is smoother
Glaze (Optional)	Milk or water	1-2 tablespoons	Adjust for drizzle consistency
Glaze (Optional)	Vanilla extract	¼ teaspoon	A little extra love

Step-by-Step Instructions

Let’s make this happen. You’re about to create a sweet potato coffee cake that’s tender, spiced, and crowned with the most irresistible crumbly streusel topping.

Preheat and Prepare

Preheat your oven to 350°F (175°C) so it’s hot and ready when your batter is mixed. Grease and flour a 9×9 inch baking pan generously, or give it a quick spray with baking spray to prevent sticking.

Make the Streusel Topping

In a medium bowl, whisk together ½ cup all-purpose flour, ¼ cup packed light brown sugar, ¼ cup granulated sugar, and ¼ teaspoon ground cinnamon until evenly combined. Add ¼ cup cold unsalted butter (cut into small pieces) and use a pastry blender or your fingertips to work the butter into the dry ingredients until the mixture looks like coarse crumbs.

Set the bowl aside while you make the cake batter.

Combine Dry Cake Ingredients

In a separate medium bowl, whisk together 1 ½ cups all-purpose flour, 1 teaspoon baking powder, ½ teaspoon baking soda, ½ teaspoon ground cinnamon, ¼ teaspoon ground nutmeg, ¼ teaspoon ground ginger, and ¼ teaspoon salt. This spice blend smells like fall in a bowl.

Cream Wet Cake Ingredients

In a large mixing bowl, use an electric hand mixer or stand mixer to cream together ½ cup softened unsalted butter and 1 cup granulated sugar until the mixture is light, fluffy, and pale in color (about 2-3 minutes). Beat in 1 large egg and 1 teaspoon vanilla extract until the batter is smooth and well combined.

Add Sweet Potato and Buttermilk

Stir in 1 cup mashed cooked sweet potato with a spatula until it’s fully blended into the butter-sugar mixture. Gradually add the dry flour mixture to the wet ingredients in three additions, alternating with ½ cup buttermilk, starting and ending with the dry ingredients. Mix gently until just combined—lumps are totally fine, and overmixing will make your cake tough.

Assemble the Cake

Pour half of the cake batter into your prepared 9×9 inch baking pan and spread it evenly with a spatula. Sprinkle half of the streusel topping evenly over the batter. Carefully spoon the remaining cake batter over the streusel layer, spreading it gently to cover (it’s okay if some streusel peeks through). Sprinkle the remaining streusel topping generously over the top of the batter.

Bake

Place the pan in your preheated 350°F oven and bake for 30-35 minutes, or until a wooden skewer inserted into the center comes out clean or with just a few moist crumbs. The top should be golden and the streusel should look crisp and toasted.

Cool and Glaze

Let the coffee cake cool in the pan on a wire rack for at least 15 minutes before slicing. If you’re adding the optional glaze, whisk together 1 cup powdered sugar, 1-2 tablespoons milk or water, and ¼ teaspoon vanilla extract in a small bowl until smooth, then drizzle it over the cooled cake in pretty zigzags.

Serve

Slice the sweet potato coffee cake into 9 generous squares and serve warm or at room temperature with a steaming mug of coffee or tea. Every bite is tender, spiced, and topped with that perfect crunchy streusel.

Don’t skip the streusel layering step—it creates the most beautiful surprise layer of crunch right in the middle of your cake, and everyone always asks how you did it.

Expert Tips

This sweet potato streusel cake is forgiving and flexible, but a few small tweaks will take it from good to absolutely swoon-worthy. Here’s what I’ve learned after baking this beauty more times than I can count.

Use Roasted Sweet Potatoes for Deeper Flavor

Roasting your sweet potatoes instead of boiling them concentrates their natural sweetness and adds a subtle caramelized flavor to the cake. Pierce whole sweet potatoes with a fork, roast at 400°F until tender, then scoop out the flesh and mash it smooth.

Don’t Overmix the Batter

Once you add the dry ingredients and buttermilk, mix just until everything is combined and you don’t see streaks of flour. Overmixing develops the gluten and makes your cake dense instead of tender and fluffy.

Keep Your Streusel Butter Cold

Cold butter is the secret to crumbly, crunchy streusel topping. If your kitchen is warm, pop the bowl in the fridge for a few minutes before sprinkling it over the batter so the butter stays in distinct little pieces.

Test for Doneness Carefully

Because there’s streusel layered inside the cake, your skewer might pick up some crumbs even when the cake is done. Look for moist crumbs rather than wet batter, and make sure the edges are pulling away slightly from the pan.

Let the Cake Cool Before Glazing

If you drizzle the glaze over a hot cake, it’ll melt right into the crumb and disappear. Wait until the cake is completely cool so the glaze stays on top in those pretty white drizzles.

For more creative ideas on using sweet potatoes in baking, check out this guide on baking with sweet potatoes from King Arthur—it’s full of inspiration for swapping sweet potato into all kinds of treats.

Variations

Maple Pecan Sweet Potato Coffee Cake

Replace the granulated sugar in the streusel with ¼ cup pure maple sugar and fold ½ cup chopped toasted pecans into the streusel mixture. Swap the vanilla glaze for a maple glaze made with powdered sugar and pure maple syrup for a totally fall-forward flavor.

Chai-Spiced Coffee Cake

Add ¼ teaspoon ground cardamom and a pinch of ground cloves to the dry cake ingredients for a warm chai-spiced twist. The sweet potato pairs beautifully with these aromatic spices, and the whole house will smell like a cozy tea shop.

Chocolate Chip Sweet Potato Coffee Cake

Fold ½ cup mini chocolate chips into the cake batter after mixing in the sweet potato. The chocolate melts into little pockets of richness and balances the warm spices perfectly.

Gluten-Free Sweet Potato Coffee Cake

Swap the all-purpose flour in both the cake and streusel for a 1:1 gluten-free baking blend. Make sure your baking powder and baking soda are certified gluten-free, and the texture will be just as tender and delicious.

Vegan Sweet Potato Coffee Cake

Replace the butter with vegan butter or coconut oil (measured solid), use a flax egg (1 tablespoon ground flaxseed mixed with 3 tablespoons water), and swap the buttermilk for ½ cup non-dairy milk mixed with 1 ½ teaspoons apple cider vinegar. Let it sit for 5 minutes before adding.

Troubleshooting

Problem: My cake sank in the middle.

This usually means the cake was underbaked or the oven temperature was too low. Make sure your oven is fully preheated to 350°F and test the cake with a skewer before pulling it out—it should come out with just a few moist crumbs, not wet batter.

Problem: The streusel topping is soggy instead of crunchy.

Your butter might have been too soft when you made the streusel, or the cake wasn’t fully cooled before covering it. Always use cold butter and let the cake cool uncovered so steam doesn’t soften the topping.

Problem: The cake is too dense and heavy.

Overmixing the batter or using too much sweet potato can make the cake dense. Measure your mashed sweet potato carefully (1 cup packed), and mix the batter just until the dry ingredients disappear.

Problem: The cake is dry.

Overbaking is the usual culprit here. Check your cake at the 30-minute mark and pull it as soon as a skewer comes out with moist crumbs. Also, make sure your sweet potato was mashed smooth and moist, not dry and stringy.

Problem: The glaze is too thick to drizzle.

Add milk or water one teaspoon at a time until the glaze reaches a pourable consistency. It should fall off your whisk in a thin, steady ribbon.

If your sweet potato puree is too wet, spread it on a baking sheet and pop it in a 300°F oven for 5-10 minutes to dry it out a bit—it makes all the difference in texture.

Storage & Reheating

This fall coffee cake recipe tastes amazing fresh from the oven, but it keeps beautifully for days and actually gets even more moist and flavorful as the spices settle in. Here’s how to store and reheat it so every slice tastes bakery-fresh.

Serving Suggestions

Serve this coffee cake with sweet potato warm or at room temperature with a pat of butter, a dollop of whipped cream, or a scoop of vanilla ice cream. It’s perfect alongside your morning coffee, as an afternoon snack, or as a cozy dessert after a fall dinner.

Storage

Store the cooled coffee cake tightly covered with plastic wrap or in an airtight container at room temperature for up to 3 days. If you’ve added the glaze, wait until it’s fully set before covering the cake so it doesn’t smudge.

Reheating

Reheat individual slices in the microwave for 15-20 seconds, or warm the whole cake in a 300°F oven for about 10 minutes until heated through. The streusel will crisp up beautifully in the oven.

Storage Method	Duration	Best For
Room Temperature (covered)	3 days	Quick snacking and serving
Refrigerator (airtight)	5 days	Longer freshness
Freezer (wrapped tightly)	3 months	Make-ahead baking

No-Waste Kitchen Ideas

Save Your Buttermilk

If you have leftover buttermilk, freeze it in ice cube trays and pop the cubes into a freezer bag. Thaw what you need for pancakes, biscuits, or your next batch of coffee cake—it stays fresh for up to 3 months.

Use Leftover Sweet Potato

If you roasted extra sweet potato for this recipe, mash it and stir it into oatmeal, blend it into smoothies, or mix it with a little butter and cinnamon for a quick side dish. You can also freeze mashed sweet potato in ½-cup portions for future baking projects.

Repurpose Stale Cake

If your coffee cake gets a little dry after a few days, cube it up and toast the pieces in the oven to make sweet croutons for yogurt parfaits or ice cream sundaes. Or blend the cubes into crumbs and use them as a topping for baked apples.

Compost Your Sweet Potato Skins

After roasting your sweet potatoes, toss the skins into your compost bin. They break down quickly and add valuable nutrients back into your garden soil.

Leftover streusel topping is baker’s gold—store it in the freezer and sprinkle it over muffins, quick breads, or fruit crisps whenever you need a quick crumbly topping.

Frequently Asked Questions

Here are answers to the most common questions I get about making this Sweet Potato Coffee Cake Recipe.

Can I use canned sweet potatoes instead of fresh for this coffee cake?

Yes, you can use canned sweet potatoes as a substitute. Make sure to drain them well and mash them until smooth. You may need to adjust the amount of liquid in the recipe slightly since canned sweet potatoes tend to be moister than roasted fresh ones.

How do I store sweet potato coffee cake and how long does it last?

Store the coffee cake in an airtight container at room temperature for up to 2 days, or refrigerate it for up to 5 days. You can also freeze individual slices wrapped in plastic wrap and aluminum foil for up to 3 months. Thaw at room temperature or warm in the microwave before serving.

Can I make sweet potato coffee cake ahead of time?

Yes, sweet potato coffee cake is perfect for making ahead. You can bake it the night before and store it covered at room temperature. You can also prepare the batter and streusel topping separately, refrigerate them overnight, and assemble and bake the next morning.

What can I substitute for the streusel topping on sweet potato coffee cake?

You can substitute the traditional streusel with chopped pecans or walnuts mixed with brown sugar and cinnamon, a simple cinnamon sugar topping, or a cream cheese crumble. You can also omit the topping entirely and dust with powdered sugar after baking.

Why is my sweet potato coffee cake too dense or dry?

A dense or dry coffee cake usually results from too much flour, overbaking, or not enough moisture. Make sure to measure flour correctly by spooning it into the measuring cup rather than scooping. Check for doneness a few minutes before the recommended baking time, and ensure your sweet potato puree is moist and smooth.

Final Dish

This Sweet Potato Coffee Cake Recipe is everything you want in a cozy fall bake—tender, warmly spiced, and topped with the most irresistible crunchy streusel. It’s easy enough for a lazy Sunday morning but fancy enough to bring to brunch or serve to guests who will absolutely ask you for the recipe.

I hope you love it as much as I do, and I’d love to see your creations—tag me in your photos or drop a comment below with your favorite way to enjoy this cake!

For more beautiful breakfast and brunch ideas, check out my collection of healthy breakfast and brunch recipes, explore my sweet baking and muffins, browse my decadent dessert and sweet treat recipes, or dive into my full Thanksgiving and fall recipes for more seasonal inspiration.

I’m Claire Whitmore — a dessert daydreamer from Asheville, NC. For me, baking isn’t about perfect pastries — it’s about the joy of sharing something sweet (and maybe sneaking an extra scoop of icing).