Sweet Potato Marshmallow Bake

Featured in The Perfect Side for Every Meal.

This beloved sweet potato casserole brings together smooth mashed sweet potatoes with just the right touch of brown sugar and warm vanilla. A layer of gooey marshmallows melts across the top while crunchy pecans add amazing texture throughout. Making it ahead lets all the flavors develop even better, perfect for those busy holiday meals when oven space is tight. Simple ingredients create pure comfort food that feels like home. The combination of creamy potatoes and sweet toppings makes everyone want seconds.
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Updated on Tue, 14 Jan 2025 22:05:09 GMT
A close-up of a baked sweet potato casserole topped with marshmallows and chopped pecans. Pin it
A close-up of a baked sweet potato casserole topped with marshmallows and chopped pecans. | tastygusto.com

Let me share one of my most treasured recipes that lights up our Thanksgiving table year after year. Sweet potatoes mashed to silky perfection blend with brown sugar butter and a hint of warm cinnamon. What makes this dish truly special is the contrast between gooey marshmallows and crunchy pecans on top creating pure comfort in every bite.

Why You'll Love This Recipe

This sweet potato casserole brings something magical to holiday meals. The combination just works so beautifully together making it perfect for Thanksgiving Christmas or Easter. Truth be told I often make it for Sunday family dinners too because it's just that good and surprisingly simple to put together.

What You'll Need

  • Sweet Potatoes: 3 pounds (about 6 medium to large) peeled and cut into cubes. I sometimes use 3 cans (29oz each) of well-drained sweet potatoes when time is tight.
  • Brown Sugar: Light or dark both work beautifully. Dark gives a richer molasses taste.
  • Butter: ⅓ cup salted butter softened. If using unsalted add a pinch of salt.
  • Pecans: ¾ cup chopped pecans divided. Walnuts work too.
  • Flavoring: ½ teaspoon vanilla extract and ¼ teaspoon cinnamon. Sometimes I add a splash of bourbon for extra warmth.
  • Marshmallows: 2 cups miniature marshmallows for that perfect golden topping.

Kitchen Steps

Start With the Potatoes
Peel cube and boil sweet potatoes for 15 minutes until tender when pierced with a fork. Drain well.
Create the Base
Mash those warm potatoes with brown sugar butter cinnamon vanilla and season with salt & pepper until smooth.
Layer it Up
Mix in half the pecans then spread everything into a buttered 9x13 baking dish.
Add the Finale
Scatter remaining pecans and marshmallows on top. Pop it into your preheated 375°F oven for 25 minutes until those marshmallows turn golden and everything is hot through.

Time Saving Tips

I often prep this casserole two days ahead when hosting big gatherings. Just keep the topping separate until baking time. Take it out of the fridge 30 minutes before cooking give it 20 minutes in the oven stir then add your toppings and bake another 15 20 minutes.

A close-up of a dish featuring sweet potatoes topped with fluffy marshmallows and chopped pecans. Pin it
A close-up of a dish featuring sweet potatoes topped with fluffy marshmallows and chopped pecans. | tastygusto.com

A Recipe Worth Sharing

The magic happens when those marshmallows get all toasty and the pecans turn golden brown. Each spoonful gives you creamy sweet potatoes crunchy nuts and that gorgeous marshmallow top. This recipe has earned its spot at countless family celebrations and I know it will become a tradition at your table too.

Frequently Asked Questions

→ Can I make this casserole ahead of time?

Yes, you can prepare this casserole up to 48 hours in advance. Keep the topping separate and add it just before baking. Let the casserole sit at room temperature for 30 minutes before baking.

→ What type of brown sugar should I use?

Both light and dark brown sugar work well in this recipe. Dark brown sugar will give a slightly deeper molasses flavor, while light brown sugar provides a milder sweetness.

→ How do I know when the sweet potatoes are done boiling?

Sweet potatoes are done when you can easily pierce them with a fork. They should be tender but not falling apart, which typically takes about 15 minutes of boiling.

→ Can I use different nuts instead of pecans?

You can substitute pecans with walnuts or almonds. Each will give a different but delicious crunch to your casserole. Pecans offer the most traditional flavor combination.

→ How do I store leftover sweet potato casserole?

Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat in the microwave or oven until warm, though the marshmallows won't be as fresh as when first baked.

Sweet Potato Pecan Casserole

A warm, comforting sweet potato casserole topped with golden marshmallows and pecans. Great make-ahead dish that everyone will love.

Prep Time
20 Minutes
Cook Time
40 Minutes
Total Time
60 Minutes

Category: Side Dishes

Difficulty: Easy

Cuisine: American

Yield: 8 Servings (1 casserole)

Dietary: Vegetarian, Gluten-Free

Ingredients

01 3 pounds sweet potatoes, peeled and cubed.
02 1/2 cup packed brown sugar.
03 1/3 cup softened butter.
04 1/2 teaspoon vanilla extract.
05 3/4 cup chopped pecans.
06 1/4 teaspoon cinnamon.
07 Salt and black pepper to taste.
08 2 cups miniature marshmallows.

Instructions

Step 01

Heat oven to 375°F and grease a 9x13 baking pan.

Step 02

Boil cubed sweet potatoes for 15 minutes until tender.

Step 03

Drain potatoes and mash with brown sugar, butter, cinnamon, vanilla, salt and pepper.

Step 04

Mix in half the pecans and spread in pan.

Step 05

Top with marshmallows and remaining pecans.

Step 06

Bake 25 minutes until marshmallows turn golden brown.

Notes

  1. Works with light or dark brown sugar.
  2. Add extra salt if using unsalted butter.
  3. Can be made 48 hours ahead.
  4. If making ahead, store topping separately.
  5. Let sit 30 minutes before baking if refrigerated.

Tools You'll Need

  • 9x13 baking pan.
  • Large pot.
  • Potato masher.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Tree nuts (pecans).
  • Dairy (butter).

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 320
  • Total Fat: 14 g
  • Total Carbohydrate: 48 g
  • Protein: 3 g