Sweet Potato Casserole for Two

Sweet Potato Casserole for Two is the cozy, marshmallow-topped holiday side you’ve been craving without the leftovers for days. Hi friend, Claire Whitmore here — baking my way through Asheville, NC, one buttery happy accident at a time.

This Sweet Potato Casserole for Two delivers all the creamy, cinnamon-spiced goodness of the classic Thanksgiving favorite in two perfectly portioned servings that won’t have you eating sweet potatoes until New Year’s.

This small batch sweet potato casserole starts with tender sweet potatoes mashed with melted butter, brown sugar, warm cinnamon, a whisper of nutmeg, and just enough vanilla extract to make everything smell like a holiday hug.

You’ll fold in whole milk or half-and-half for that silky texture, divide the mixture between two individual ramekins, then crown each one with a generous layer of mini marshmallows that bake up golden and puffy in just 15 to 20 minutes.

The entire recipe takes about 40 minutes from start to finish and requires nothing more than basic mixing and microwaving skills, making it perfect for couples celebrating a quiet Thanksgiving, empty nesters who want the tradition without the crowd, or anyone hosting an intimate holiday dinner.

I first made this after my brother moved across the country and I spent Thanksgiving with just my partner and our overly optimistic golden retriever. We didn’t need a 9×13 pan of anything, but we absolutely needed the marshmallow-topped magic.

So I halved, quartered, and tinkered until these two little ramekins emerged from the oven — and honestly, they tasted like the whole holiday in a single spoonful.

The Short Version

This Sweet Potato Casserole for Two combines mashed sweet potatoes, melted butter, brown sugar, cinnamon, and vanilla with a golden marshmallow topping, all baked in two individual portions. Ready in about 40 minutes with beginner-friendly steps, it’s the perfect way to enjoy a classic holiday side without committing to a full casserole dish.

What’s Inside (Nutrition Snapshot)

For my fellow label-readers, here’s the breakdown per serving:

Per Serving	Amount
Calories	385
Protein	4 g
Carbohydrates	68 g
Total Fat	12 g
Fiber	5 g
Sugar	38 g

Values are estimates and may vary based on specific brands and ingredient substitutions.

Your Kitchen Toolkit

Must-Haves:

• Two 1-cup ramekins or one small 2-cup baking dish
• Microwave-safe bowl with lid (or a plate works too)
• Potato masher or fork
• Medium mixing bowl
• Measuring cups and spoons

Nice-to-Haves:

• Electric hand mixer for ultra-smooth texture
• Vegetable peeler (honestly, I sometimes skip peeling if the skins are thin and tender)

Gather Your Ingredients

This individual sweet potato bake starts with just a handful of pantry staples and two sweet potatoes you probably already have rolling around in your crisper drawer.

You’ll need two small sweet potatoes (about a pound total) as your base — look for firm ones without soft spots. The flavor builders are melted unsalted butter, packed brown sugar for caramel-like sweetness, ground cinnamon and a pinch of nutmeg for warmth, and vanilla extract to tie everything together.

Whole milk or half-and-half brings the creaminess (this is not the moment for skim), and mini marshmallows create that iconic golden, gooey crown on top.

Ingredient	Amount
Small sweet potatoes	2 (about 1 lb total)
Unsalted butter, melted	2 tbsp (salted works in a pinch, just skip any extra salt)
Brown sugar, packed	1/4 cup
Ground cinnamon	1/4 tsp
Nutmeg	Pinch
Vanilla extract	1/4 tsp
Milk	1/4 cup (whole milk or half-and-half recommended for richness)
Mini marshmallows	1 cup (the mini ones melt more evenly than the big guys)

Let’s Bake: Step-by-Step Instructions

This Sweet Potato Casserole for Two comes together with simple mixing and a quick bake — no fancy techniques, just cozy, spiced sweetness.

1. Preheat and prep your baking dishes. Set your oven to 375°F (190°C) and lightly grease two small ramekins (each about 1-cup capacity) or one small baking dish with butter or nonstick spray. Look for: A thin, even coating that prevents sticking without pooling at the bottom.
2. Wash, peel, and cube the sweet potatoes. Rinse two small sweet potatoes under cool water, peel off the skins using a vegetable peeler, then cut the flesh into 1-inch cubes for even cooking. Look for: Uniform pieces that will soften at the same rate in the microwave.
3. Microwave the sweet potato cubes until tender. Place the cubed sweet potatoes in a microwave-safe bowl, add 1 to 2 tablespoons of water, cover with a lid or plate, and microwave on high for 5 to 7 minutes, checking halfway through. Alternatively, boil the cubes in a small pot until a fork slides through easily. Look for: Sweet potatoes that fall apart when you press them gently with the back of a spoon.
4. Drain and mash the cooked sweet potatoes. Pour off any excess water from the bowl, then mash the tender sweet potatoes with a potato masher or fork until mostly smooth — a few small lumps are totally fine for rustic texture. Look for: A fluffy, slightly chunky purée that holds together when you lift the masher.
5. Stir in the melted butter, brown sugar, and warm spices. Add 2 tablespoons of melted unsalted butter, 1/4 cup packed brown sugar, 1/4 teaspoon ground cinnamon, a pinch of nutmeg, and 1/4 teaspoon vanilla extract to the mashed sweet potatoes, then mix until everything is evenly distributed. Look for: A glossy, caramel-colored mixture with no streaks of brown sugar left.
6. Gradually fold in the milk for a creamy consistency. Pour in 1/4 cup of whole milk or half-and-half a little at a time, stirring after each addition, until the sweet potato mixture is smooth and spoonable but not runny. Taste and adjust the sweetness or spices if you like. Look for: A silky, pudding-like texture that holds soft peaks when you lift your spoon.
7. Divide the mixture between the prepared ramekins. Spoon the sweet potato filling evenly into your two greased ramekins or spread it into the small baking dish, smoothing the tops with the back of a spoon. Look for: Level surfaces that leave about 1/4 inch of space at the rim for the marshmallows to puff.
8. Top each serving generously with mini marshmallows. Arrange 1 cup of mini marshmallows over the sweet potato filling, covering the surface completely — don’t be shy, this is the best part. Look for: A fluffy white layer that reaches just to the edge of each ramekin.
9. Bake until the marshmallows are golden and puffed. Place the ramekins on a baking sheet (in case of drips) and bake for 15 to 20 minutes, watching closely during the last few minutes to prevent the marshmallows from burning. Look for: Golden-brown tops with slightly crispy edges and a bubbly filling underneath.
10. Cool briefly before serving. Let the sweet potato soufflé for two cool for 3 to 5 minutes so the filling sets slightly and you don’t burn your tongue on molten marshmallow. Look for: A dish that’s still warm but no longer steaming, with marshmallows that have set into chewy, stretchy perfection.

Little Lessons from Claire’s Kitchen (Tips)

This marshmallow sweet potato side is forgiving, but a few tiny tweaks make all the difference between good and “please-pass-me-another-spoonful” great.

Use orange-fleshed sweet potatoes, not pale yams. The deep orange varieties (often labeled as “Garnet” or “Jewel”) have a naturally sweeter, creamier texture that needs less added sugar. The pale, starchy ones can turn gluey when overmixed.

Don’t skip the butter — it’s your secret weapon for richness. I tried making this with just milk once to “lighten it up,” and it tasted like cafeteria mashed sweet potatoes. The butter adds flavor and helps the sugar dissolve evenly.

Taste the filling before you bake. Raw sweet potato filling is safe to taste (no eggs here), and it’s your chance to adjust the sweetness or spice level. I usually add a tiny extra pinch of cinnamon because I’m a spice fiend, but you do you.

Let your melted butter cool for a minute before mixing. I learned this the hard way when scalding-hot butter turned my milk into a curdled mess. Room-temperature butter blends smoothly and won’t shock the dairy.

For extra-smooth texture, use an electric mixer on low speed. As King Arthur Baking’s guide to starch and mixing points out, sweet potatoes have less starch than regular potatoes, so you can mix them more vigorously without the gummy risk — though I still prefer a gentle hand for that homestyle feel.

Oops! Fixing Common Sweet Potato Casserole for Two Hiccups

The filling turned out watery or runny.

This usually happens when the sweet potatoes weren’t drained well after microwaving or boiling, or you added too much milk at once. Next time, let the cooked sweet potatoes sit in a colander for a minute to release steam and moisture, then add milk a tablespoon at a time until you reach the consistency you want.

If it’s already too thin, stir in a teaspoon of cornstarch and bake an extra 5 minutes to thicken.

The marshmallows burned before the filling heated through.

Your oven might run hot, or the rack was too close to the top element. Move your ramekins to the center rack and check them at the 12-minute mark — if the marshmallows are already browning but the filling is still cool, tent the dishes loosely with foil and bake for another 5 to 8 minutes.

The texture is gluey or paste-like.

Overmixing sweet potatoes (especially with an electric mixer on high speed) breaks down the cell structure and releases too much starch. Stick to a potato masher or a fork, or use the mixer on the lowest setting for just 30 seconds. A few lumps are better than wallpaper paste.

The casserole tastes bland or one-note sweet.

Sweet potatoes need a little salt to balance the sugar — add a pinch of kosher salt to the filling along with the spices. A tiny squeeze of fresh lemon juice (just a few drops) also brightens the flavor without tasting citrusy.

The marshmallows slid off the top during baking.

If the sweet potato mixture was too smooth or wet, the marshmallows have nothing to grip. Make sure your filling is thick enough to hold a spoon upright, and press the marshmallows gently into the surface before baking so they anchor slightly.

Make It Yours: Twists & Swaps

This small batch sweet potato casserole is a blank canvas for your favorite flavors and dietary needs.

Seasonal Spin: Swap the mini marshmallows for a pecan streusel topping — mix 2 tablespoons chopped pecans with 1 tablespoon brown sugar, a pinch of cinnamon, and 1 teaspoon melted butter, then sprinkle it over the filling before baking. You’ll get that crunchy, nutty contrast without the marshmallow sweetness.

Gluten-Free: This recipe is naturally gluten-free as written — just double-check your vanilla extract label to make sure it’s pure extract and not an imitation blend that might contain gluten.

Dairy-Free / Vegan: Replace the butter with coconut oil or vegan butter, use unsweetened almond milk or oat milk in place of dairy milk, and top with vegan marshmallows (Dandies brand is my favorite). The texture stays creamy and the marshmallows still puff beautifully.

Dress It Up: Add a tablespoon of bourbon or dark rum to the filling along with the vanilla for a grown-up, caramelized depth. Or fold in 2 tablespoons of crushed pineapple (drained well) for a retro-tropical twist that tastes like the 1970s in the best way.

Keep It Rustic: Skip the ramekins and bake the whole batch in one small dish, then scoop it family-style at the table. The marshmallow layer won’t look as Instagram-perfect, but it’ll taste just as good — and honestly, that’s what matters most.

Serve It, Stash It, Warm It Up (Storage)

This individual sweet potato bake is best served warm straight from the oven, when the marshmallows are still gooey and the filling is silky-smooth.

Pair it with your favorite Thanksgiving dinner for two mains like roasted turkey breast, glazed ham, or even a simple rotisserie chicken. It also plays beautifully alongside green beans, cranberry sauce, and buttery dinner rolls — check out these easy and affordable Thanksgiving sides for two for a complete cozy spread.

Store any leftovers (assuming anyone leaves you a bite) in the ramekins covered tightly with plastic wrap or transferred to an airtight container in the fridge for up to 3 days. The marshmallow topping will deflate and get a little sticky, but the flavor stays sweet and comforting.

For longer storage, freeze the baked casserole without the marshmallow topping for up to 2 months — thaw in the fridge overnight, add fresh marshmallows, and reheat.

To reheat, microwave individual servings for 45 to 60 seconds until warmed through, or pop the ramekins back in a 350°F oven for 10 minutes if you want to re-crisp the marshmallows. If the topping looks too dark, cover loosely with foil during reheating and uncover for the last 2 minutes.

Love Your Leftovers (No-Waste Ideas)

• Sweet Potato Breakfast Parfait: Layer crumbled leftover casserole with vanilla Greek yogurt, granola, and a drizzle of maple syrup for a dessert-for-breakfast situation I fully support.
• Stuffed French Toast Filling: Spread a thin layer of the sweet potato mixture between two slices of bread, dip in egg batter, and pan-fry until golden for the most decadent French toast of your life.
• Quick Sweet Potato Pie Filling: Thin out leftover casserole with a splash of milk, pour it into a store-bought pie crust, and bake at 350°F for 25 minutes — instant mini pie with zero extra effort.
• Freezer Bites: Roll chilled casserole into tablespoon-sized balls, freeze on a parchment-lined tray, then store in a freezer bag. Pop one in the microwave for 20 seconds when you need a sweet potato fix in a hurry.

Your Questions, Answered (FAQs)

Here are the questions I get asked most often about this cozy little side dish.

Until Next Time

If you give this Sweet Potato Casserole for Two a whirl, I’d love to hear how it turned out — come back and leave a star rating or tell me in the comments if you went full marshmallow or tried the pecan streusel twist. Every single comment makes my day, and I read them all (usually with a spoonful of something sweet in hand and my dog begging at my feet).

This small batch sweet potato casserole has become one of my favorite ways to celebrate the holidays without the stress of huge portions or endless leftovers. It’s just the right amount of cozy, just the right amount of sweet, and honestly, just the right amount of marshmallow for two people who deserve a little holiday magic.

And if you’re planning a full intimate Thanksgiving spread, don’t miss more of our Thanksgiving and fall favorites or this Thanksgiving dessert sampler for two that pairs perfectly with this casserole. For another sweet potato treat any time of year, try our sweet potato coffee cake — it’s proof that sweet potatoes belong in every meal, not just the holiday table.

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).