Our easy sweet potato casserole comes together quickly with the use of canned sweet potatoes. Topped with mini marshmallows and then baked until golden brown this is a crowd-pleaser! Gluten-free.
These Thanksgiving sweet potatoes make an appearance every year. The creamy and fluffy potatoes topped with the sweet marshmallows is the perfect combination. It is a must have recipe around the holidays!
For more Thanksgiving recipes, consider adding Green Bean Casserole with Fresh Green Beans, Gluten Free Dinner Rolls, Impossible Pumpkin Pie and Gluten Free Scalloped Potatoes to this year’s menu.

Canned Sweet Potato Casserole
We enjoy serving casseroles around the holidays because you can make a dish to feed a crowd, create all the family favorites and make in advance if desired.
This sweet potato casserole recipe is no exception! Make the day of or up to a few days in advance. A single batch makes up to 8 servings and can easily be adjusted to feed a larger group.
Along with this dish, Crockpot Green Bean Casserole, Gluten Free Corn Casserole, and Butternut Squash Casserole are holiday favorites. Our Dairy Free Breakfast Casserole and Make-Ahead French Toast Casserole are kid favorites to kickstart the mornings!
Don’t let the holidays go by without making sweet potato casserole with marshmallows.
To get started, gather the equipment and ingredients then follow the written instructions or printable recipe card. Enjoy!

Equipment
Ingredients
- 40 ounce cut sweet potatoes in light syrup, drained ✅
- 1/2 cup milk
- 2 large eggs, whisked
- 1/3 cup brown sugar
- 1/4 cup butter, melted
- 2 teaspoons pumpkin pie spice ✅
- 1 teaspoon vanilla ✅
- 1/2 teaspoon salt
- 3 cups mini marshmallows ✅
Gluten-Free Guide: If you’re new to eating gluten-free we understand it’s overwhelming trying to figure out which foods may contain gluten and which ones don’t. All of our gluten-free recipes marked with this symbol ✅ represent foods that need to be checked for gluten.


How To Make
Preheat oven to 350 degrees. Place the sweet potatoes into a large mixing bowl. Mash with a potato masher or fork.
Combine the casserole ingredients
To the sweet potatoes add the milk, eggs, sugar, butter, pumpkin pie spice, vanilla, and salt. Stir well. Pour into an oven-safe 9×13-inch pan. Top with the mini marshmallows.
Bake
Bake for 35-45 minutes or until the marshmallows start to turn golden brown. Let sit for 10 minutes. Serve hot.


Frequently Asked Questions
Store leftovers in the fridge by covering the baking dish or transferring into an airtight container.
Reheat in the microwave in 20-second increments until hot.
A fun variation is mixing toasted pecans into the casserole batter or spreading as a topping before adding the marshmallows.
Assemble the casserole then tightly cover the baking dish with plastic wrap or foil before placing in the fridge to store. Remove from the fridge 30 minutes before cooking then place the uncovered dish into a preheated oven and bake for the 35-45 minutes.


Kids In The Kitchen
Cooking tips and suggestions for kids making this recipe.
- Swap the canned sweet potatoes with fresh sweet potatoes by washing, peeling and boiling until fork tender.
- Crack the eggs into a small bowl then pour into the casserole mixture just in case a shell falls in.
- Use mini, regular or jumbo marshmallows for the topping.
More Easy Sweet Potato Recipes
- Air Fryer Baked Sweet Potato
- Gluten Free Sweet Potato Fries
- Sweet Potato Muffins
- Baked Sweet Potato Slices
- Butternut Squash and Sweet Potato Soup
- Sweet Potato Crunch
- Old Fashioned Sweet Potato Pie
- Sweet Potato Egg Cups

More Holiday Recipes
- Caramel Apple Slices
- Cherry Cheesecake Dip
- No Bake Cheesecake Bites
- Gluten-Free Pecan Pie
- Beef Tenderloin Recipe
- Gluten Free Rolls
- Gluten Free Peanut Butter Blossoms
- Gluten-Free Pumpkin Roll
- Christmas Fudge Recipe
CKC Features both Gluten-Free Guidance and Kids Cooking Instructions: If you’re new to eating gluten-free we understand it’s overwhelming trying to figure out which foods may contain gluten and which ones don’t. All of our gluten-free recipes marked with this symbol ✅ represent foods that need to be checked for gluten or cross-contamination.
The ⭐️ symbol in the recipe below denotes the steps in which kid cooks may need a helper (depending on age). If there is no ⭐️ symbol, that step (or recipe) doesn’t require a helper.
Easy Sweet Potato Casserole
Ingredients
- 40 ounce cut sweet potatoes in light syrup, drained ✅
- 1/2 cup milk
- 2 large eggs, whisked
- 1/3 cup brown sugar
- 1/4 cup butter, melted
- 2 teaspoons pumpkin pie spice ✅
- 1 teaspoon vanilla ✅
- 1/2 teaspoon salt
- 3 cups mini marshmallows ✅
Instructions
- Preheat the oven and mash the sweet potatoes. Preheat oven to 350 degrees. Place the sweet potatoes into a large mixing bowl. Mash with a potato masher or fork.40 ounce cut sweet potatoes in light syrup, drained
- Combine the casserole ingredients. To the sweet potatoes add the milk, eggs, sugar, butter, pumpkin pie spice, vanilla, and salt. Stir well. Pour into an oven-safe 9×13 inch pan. Top with the mini marshmallows.1/2 cup milk, 2 large eggs, whisked, 1/3 cup brown sugar, 1/4 cup butter, melted, 2 teaspoons pumpkin pie spice, 1 teaspoon vanilla, 1/2 teaspoon salt, 3 cups mini marshmallows
- ⭐️Bake. Bake for 35-45 minutes or until the marshmallows start to turn golden brown. Let sit for 10 minutes. Serve hot.
Notes
- Adjust the ingredients to keep a larger crowd.
- Make the day of or a few days in advance.
- Store leftovers in the fridge, reheating in the microwave when desired.
- Add toasted pecans to this recipe for a fun variation.
Nutrition
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