04 September 2026
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Sweet Potato Casserole
The Kitchen

Sweet Potato Casserole

Small batch sweet potato casserole made with mashed sweet potatoes and marshmallows.

By Test Kitchen · United States · 2 min ·
Ingredients · Servings 4
  • 1½ pound Sweet Potatoes (peeled, cut into quarters and each quarter cut into 1-2 inch pieces (about 3 medium-large sweet potatoes))
  • 2 tablespoons Whole Milk
  • 2 tablespoons Butter
  • 2 tablespoons Brown Sugar
  • ¾ teaspoon Salt
  • ½ teaspoon Cinnamon
  • ¼ teaspoon Vanilla Extract
  • 1 - 1½ cup Mini Marshmallows (enough to cover the top completely)
Method · 60 min
  1. You will also need: Small ovenproof casserole dish (7½ x 5½ inch dish works well), Masher, sturdy whisk or large fork, Colander/strainer
  2. Preheat the oven to 350°F
  3. Add the sweet potatoes to a large saucepan or pot and cover completely with water by a couple of inches. Place over high heat and bring the water to a boil (it will take about 5-6 minutes)
  4. Cook for 15-20 minutes until the sweet potatoes are very tender. They should break apart easily when pierced with the tip of a knife or fork.
  5. Drain the sweet potatoes well. Use a colander/strainer to get all the water out.
  6. Place them back into the pot they were cooked in or in a large bowl.
  7. Mash the sweet potatoes with a masher, sturdy whisk or a large fork to break them up a bit. Then add the milk, butter, brown sugar, salt, cinnamon, and vanilla. Continue mashing and stirring until everything is combined and the sweet potatoes are smooth.
  8. Add the mashed sweet potatoes to a small casserole dish and arrange it so that the top is flat. Use a rubber spatula or the back of a large spoon to smooth it out.
  9. Arrange the marshmallows on top of the sweet potatoes. Bake for 15-20 minutes or until the edges are bubbly and the marshmallows are slightly melted and lightly browned on top.
  10. Let the casserole set for a few minutes, serve and enjoy.

A simple side dish for Sunday dinner or small holiday gatherings. Place over high heat and bring the water to a boil (it will take about 5-6 minutes) Cook for 15-20 minutes until the sweet potatoes are very tender. They should break apart easily when pierced with the tip of a knife or fork.

Use a colander/strainer to get all the water out. Place them back into the pot they were cooked in or in a large bowl. Mash the sweet potatoes with a masher, sturdy whisk or a large fork to break them up a bit.

Then add the milk, butter, brown sugar, salt, cinnamon, and vanilla. Continue mashing and stirring until everything is combined and the sweet potatoes are smooth.

Add the mashed sweet potatoes to a small casserole dish and arrange it so that the top is flat. Use a rubber spatula or the back of a large spoon to smooth it out. Arrange the marshmallows on top of the sweet potatoes.

Bake for 15-20 minutes or until the edges are bubbly and the marshmallows are slightly melted and lightly browned on top. Let the casserole set for a few minutes, serve and enjoy.

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