Dulce de Leche Sweet Potato Casserole

Here is a twist on your traditional sweet potato casserole.

When I was young, my grandmother used to make her sweet potato casserole with Cajeta for Thanksgiving. My initial plan was to make it, but I could not find any Cajeta nearby. So I decided to make the same recipe with dulce de leche. Cajeta and dulce de leche are basically the same. A difference is that Cajeta is made with goat milk and dulce de leche is made with cow milk.

This recipe came out delicious and I recommend trying this dish for your Thanksgiving dinner next week. The sweet potatoes were gooey and sweet! I forgot how much sweetness marshmallows add when you place them on top of the sweet potatoes.

I did boil the sweet potatoes the night before for 40 minutes and they were still soft enough to be mashed the next day when I decided to make the casserole. If you are needing to prep for Thanksgiving and want to make this dish, I think you are safe to boil the sweet potatoes the night before. It might save you some cooking time Thanksgiving Day.

I hope you all enjoy this recipe! Let me know how it turns out.

Dulce de Leche Sweet Potato Casserole

  • Servings: 6-8
  • Difficulty: moderate
  • Rating: ★★★★
  • Print

Perfect for a holiday feast.


  • 4 large sweet potatoes
  • 1/4 cup butter
  • 3/4 cup brown sugar
  • 3/4 cup dulce de leche
  • 1 cup walnuts (optional)
  • 2 cups mini marshmallows


  1. Rinse and peel sweet potatoes. Chop into halves when finished and set aside.
  2. Next in a large pot, bring water to boil.
  3. Add in sweet potatoes and cook for 40 minutes.
  4. While the potatoes are cooking, preheat oven to 375°F.
  5. When potatoes are cooked, drain water from pot. (You can transfer the potatoes to a different bowl to mash at this point if you like. I mashed them in the same pot.)
  6. Mash sweet potatoes until you get the desired consistency.
  7. Add in the butter and sugar. Mix well.
  8. Add the dulce de leche. Continue mixing until ingredients are combined well.
  9. Pour the walnuts next if desired.
  10. Pour the mixture into a small 9-inch square pan. Spread evenly.
  11. Top with marshmallows and place in oven for an additional 17-20 minutes.

Let the sweet potato casserole cool before serving.


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