How to Make the Perfect Sweet Potato Casserole with Marshmallows
American · Easy · 55 min · 8 servings
This classic holiday casserole features a velvety smooth sweet potato base topped with a golden layer of toasted mini marshmallows. It is the ultimate crowd-pleasing side dish that disappears from the table every single time.
Why this recipe works
This Sweet Potato Casserole with Marshmallows recipe has been crafted to deliver restaurant-quality results in your home kitchen. At just 55 minutes from start to finish, it fits perfectly into a busy schedule without sacrificing flavor. Each serving comes in at 360 calories with 4g of protein, making it a balanced choice for any meal.
What you will need
This recipe uses 6 simple ingredients that you can find at any grocery store:
- 4 large sweet potatoes peeled and chopped
- 3 tablespoons unsalted butter melted
- 0.5 cup brown sugar packed
- 1 teaspoon vanilla extract
- 0.5 teaspoon cinnamon
- 3 cups mini marshmallows
Step by step instructions
Step 1: Cook the Sweet Potatoes
Boil peeled and chopped sweet potatoes in a large pot of salted water for 15 to 20 minutes until fork tender. Drain thoroughly and allow to steam dry for 5 minutes so the casserole is not watery.
Step 2: Make the Sweet Potato Mash
Mash the drained sweet potatoes with melted butter, brown sugar, vanilla extract, cinnamon, and a generous pinch of salt until completely smooth and creamy. Taste and adjust sweetness as needed.
Step 3: Assemble the Casserole
Preheat oven to 375 degrees F. Spread the sweet potato mash evenly into a greased 9 by 13 inch baking dish. Scatter mini marshmallows in an even layer over the top covering the entire surface.
Step 4: Bake Until Golden
Bake for 15 to 20 minutes until marshmallows are puffed, golden brown, and toasted on top. Watch carefully in the final few minutes as marshmallows can burn very quickly. Serve immediately.
Easy substitutions
Missing an ingredient? Here are some swaps that work perfectly:
- mini marshmallows → a streusel topping made with oats, brown sugar, and butter
- unsalted butter → coconut oil for a dairy-free version
Common mistakes to avoid
Watch out for these pitfalls that can affect your results:
- Not draining the sweet potatoes well enough which makes the casserole runny and soggy
- Leaving the casserole unattended under the broiler which causes marshmallows to burn in seconds
Nutrition facts
Per serving: 360 calories, 4g protein, 68g carbs, 8g fat, 4g fiber.
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