Sourdough Discard Cinnamon Sugar Donut Muffins

Sourdough Discard Cinnamon Sugar Donut Muffins are the kind of recipe that makes you feel like a genius baker with almost zero effort. We’re talking tender, warmly spiced mini muffins rolled in buttery cinnamon sugar — like a donut and a muffin had a delicious little baby. They use up your sourdough discard, come together in under 30 minutes, and make exactly 24 bite-sized pieces of pure breakfast magic.

Hey there, I’m Claire Whitmore — a pastry whisperer in Asheville, NC, where butter totally counts as self-care. These sourdough discard cinnamon sugar donut muffins have become my go-to on slow weekend mornings when I want something cozy but don’t want to spend an hour in the kitchen.

They’re packed with warm cinnamon and nutmeg, leavened with baking soda and your trusty sourdough starter, and finished with a sticky cinnamon sugar coating that makes every single bite feel like a treat.

Little Snapshot: What This Recipe Delivers

These sourdough discard cinnamon sugar donut muffins are fluffy, warmly spiced mini muffins made with all-purpose flour, sourdough starter discard, cinnamon, nutmeg, and both granulated and brown sugars.

They bake in just 10 minutes at 375 degrees F and are finished with a buttery cinnamon sugar coating. The recipe makes 24 mini muffins, requires only basic pantry ingredients, and is beginner-friendly — perfect for a quick sourdough breakfast or a crowd-pleasing brunch treat.

Cinnamon Sugar Muffins Nutritional Peek

Here’s an approximate nutritional breakdown per mini muffin (based on 24 servings):

Nutrient	Amount Per Serving
Calories	~85 kcal
Carbohydrates	~12 g
Protein	~1 g
Total Fat	~4 g
Saturated Fat	~2.5 g
Sugar	~7 g
Fiber	~0.2 g
Sodium	~55 mg

Nutritional values are estimates and may vary based on ingredient brands and exact measurements.

Ingredients for These Cinnamon Sugar Muffins

For the cinnamon sugar muffins batter, you’ll work with two simple categories. The dry ingredients — all-purpose flour, baking soda, salt, cinnamon, and nutmeg — get whisked together first to make sure the leavening is evenly distributed.

The wet ingredients — egg, sourdough starter discard, melted butter, and both sugars — go into a separate bowl before being folded into the dry mix. Keep this gentle for a tender, fluffy crumb.

For the cinnamon sugar topping, all you need is melted butter, granulated sugar, and ground cinnamon. It’s the finishing touch that takes these muffins from “yummy” to “I need six more.”

Muffin Batter

Amount	Ingredient
1 1/4 cups (162.5 g)	All-purpose flour
1/3 cup (76 g)	Granulated sugar
3 tablespoons (35 g)	Packed light brown sugar
1/2 cup (85 g)	Sourdough starter discard (unfed)
1/2 teaspoon	Baking soda
1/4 teaspoon	Salt
1/2 teaspoon	Ground cinnamon
1/4 teaspoon	Ground nutmeg
1 large	Egg
1/3 cup	Milk
1/4 cup (50 g)	Unsalted butter, melted (Yes, real butter — margarine just doesn’t cut it here.)

Cinnamon Sugar Topping

Amount	Ingredient
1/4 cup (50 g)	Granulated sugar
1/2 teaspoon	Ground cinnamon
4 tablespoons (53 g)	Butter, melted (for dipping — generous is the right amount here)

Tools You’ll Actually Use

• 2 x 12-cup mini muffin tin
• Cooking spray or softened butter for greasing
• 2 medium mixing bowls
• Whisk
• Rubber spatula
• Small cookie scoop or spoon (for filling the cups)
• Small bowl (for the cinnamon sugar topping)
• Wire cooling rack

How to Make Sourdough Discard Cinnamon Sugar Donut Muffins: Step-by-Step

Making these sourdough discard cinnamon sugar donut muffins is genuinely one of the easiest baking projects you’ll ever do. Here’s how it goes, step by beautiful step.

1. Preheat and prep. Preheat your oven to 375 degrees F. Lightly grease two 12-cup mini muffin tins with cooking spray and set them aside. Greasing every cup well ensures those cute little muffins pop right out without sticking.
2. Mix the dry ingredients. In a medium bowl, whisk together the 1 1/4 cups all-purpose flour, 1/2 teaspoon baking soda, 1/4 teaspoon salt, 1/2 teaspoon ground cinnamon, and 1/4 teaspoon ground nutmeg. Whisking distributes the baking soda and spices evenly so every muffin gets that warm, fragrant flavor.
3. Mix the wet ingredients. In a separate bowl, whisk together 1 large egg, 1/2 cup sourdough discard, 1/4 cup melted butter, 1/3 cup granulated sugar, and 3 tablespoons packed light brown sugar until smooth and well combined. The brown sugar adds a little caramel depth that makes these extra special.
4. Combine wet and dry. Pour the wet ingredients into the dry ingredients. Add the 1/3 cup milk, then use a rubber spatula to fold everything together until just combined and no dry streaks remain. Do not overmix — a few lumps are your friend here. Overmixing develops gluten and makes the muffins tough instead of tender.
5. Fill the muffin tin. Using a small cookie scoop or spoon, fill each prepared mini muffin cup about 2/3 full. This gives them room to puff up beautifully without overflowing.
6. Bake. Slide the tins into the oven and bake for 10 minutes, until the tops spring back lightly when touched. Your kitchen should smell like a cozy cinnamon roll shop right about now.
7. Cool briefly. Let the muffins cool in the tin for just a couple of minutes, then transfer them to a wire cooling rack. Don’t let them sit in the tin too long or the bottoms can get a little steamy and soft.
8. Make the cinnamon sugar topping. In a small bowl, whisk together 1/4 cup granulated sugar and 1/2 teaspoon ground cinnamon. Melt 4 tablespoons of butter in a separate small bowl.
9. Coat and finish. While the muffins are still slightly warm (not hot), dip the top of each muffin in the melted butter, then roll the buttered top through the cinnamon sugar mixture until evenly coated. The warmth helps the coating stick — and oh, it sticks so perfectly. Repeat with all 24 muffins and try not to eat them all immediately.

Claire’s Pro Tips for Perfect Cinnamon Sugar Muffins

Working with cinnamon sugar muffins that use sourdough discard is pretty forgiving, but a few little tricks make a real difference. I’ve made my share of dense, sad muffins to earn these tips — so you don’t have to!

Don’t overmix. This is the single biggest muffin mistake. The moment your batter comes together with no dry streaks, stop stirring. Lumps are totally fine and won’t affect the final texture.

Use your discard straight from the fridge. It doesn’t need to be room temperature for this recipe. Cold discard works just fine here since we’re using baking soda (not active yeast) to do the leavening.

Fill your cups only 2/3 full. It’s tempting to load them up, but overfilled cups lead to flat-topped, mushroom-shaped muffins that don’t look nearly as cute. 2/3 full gives you that perfect little dome.

Use a cookie scoop for even portions. It makes filling the mini muffin cups so much faster and keeps all the muffins the same size so they bake evenly.

Quick Fixes for Sourdough Discard Cinnamon Sugar Donut Muffins

Even simple recipes have their tricky moments. Here are the most common issues and exactly how to fix them.

My muffins came out dense and heavy. This usually means the batter was overmixed. Next time, fold the wet and dry ingredients together with a spatula using as few strokes as possible. Stop the moment no dry flour streaks remain.

The cinnamon sugar topping isn’t sticking. The muffins were probably too cool when you dipped them. Coat them within 5–8 minutes of coming out of the oven while they still have a little warmth. You can also dip each muffin twice — once in butter, once in sugar — for extra coverage.

My muffins overflowed in the pan. The cups were filled too full. Stick to 2/3 full and you’ll get that perfect rounded top every time.

The muffins taste flat or bland. Check your spice amounts and make sure your baking soda isn’t expired. Sourdough discard also adds subtle tang, which helps lift flavors — a very old or inactive discard may reduce that effect.

The muffins stuck to the tin. Make sure every cup is thoroughly greased, including the flat top edges. Cooking spray gets into all the corners and makes removal much easier than butter alone.

Variations and Fun Twists

Once you’ve got the base recipe down, it’s easy to riff on these sourdough breakfast muffins in so many delicious directions.

Apple spice version: Fold 1/3 cup finely grated apple into the batter for a fall-ready twist. Pair it with a pinch of extra cinnamon and a dash of cardamom in the batter.

Pumpkin spice version: Swap 2 tablespoons of the milk for 2 tablespoons of pumpkin puree and add a pinch of cloves to the spice mix. Cozy season, anyone?

Gluten-free swap: Use a 1:1 gluten-free flour blend in place of all-purpose flour. The texture will be slightly different but still delicious.

Chocolate chip add-in: Fold 1/4 cup mini chocolate chips into the batter before scooping. The cinnamon-chocolate combo is completely irresistible.

Standard muffin tin: No mini tin? Use a regular 12-cup muffin tin and bake at 375 degrees F for 14–16 minutes instead. The coating works just as well on full-sized muffins — they’ll just be extra indulgent.

Looking for more ideas to round out a brunch spread? These pair perfectly alongside an asparagus Gruyere puff pastry tart for a sweet-and-savory combination your guests will love.

Serving, Storage and Reheating

These discard recipes are best served fresh and slightly warm. Arrange them on a pretty little plate and watch them disappear before you even sit down. They’re wonderful alongside a cup of coffee, tea, or even a glass of cold milk.

Store any leftovers (if that miracle happens) in an airtight container at room temperature for up to 3 days. The coating softens slightly over time but the flavor stays wonderful. For longer storage, freeze the uncoated muffins for up to 2 months.

To reheat, pop them in a 300-degree F oven for 4–5 minutes, or microwave for 15–20 seconds. If you froze them without the cinnamon sugar topping, dip them fresh after reheating for the best result.

No-Waste Kitchen Magic

This whole recipe is built around the idea of using what you already have. That sourdough discard sitting in your fridge? Don’t throw it away — turn it into something delicious.

If your discard is very old (more than 2 weeks unfed), it’s best to compost it rather than bake with it. Beyond that, the flavor can become overly sour and acidic in a way that affects the final taste.

Any leftover cinnamon sugar topping can be saved in a small jar and used to sprinkle over oatmeal, yogurt, or toast throughout the week. Zero waste, maximum flavor.

Day-old muffins (without the coating) can be sliced in half and pan-fried in a little butter for an extra-crispy morning treat. Think: cinnamon-scented croutons for your fancy brunch fruit salad, or a little dessert with a scoop of vanilla ice cream on top.

Sourdough Discard Cinnamon Sugar Donut Muffins FAQs

A Cozy Little Goodbye

These sourdough discard cinnamon sugar donut muffins have become one of my most-requested recipes, and honestly? I get it. They’re the perfect sweet spot between quick and impressive, casual and cozy.

I’d love to see your spin on this recipe! Drop a comment below with your photos — I’d love to see how you made it your own. Did you add chocolate chips? Try a fall spice variation? These sourdough discard cinnamon sugar donut muffins are endlessly adaptable, and I just know you’ve got amazing ideas already brewing.

So go raid that fridge for your discard, preheat the oven, and get ready for your kitchen to smell absolutely incredible. Happy baking, friend.

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 muffin before anyone notices it’s gone).