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Overhead view of 5-Ingredient Maple Sweet Potato Casserole in a casserole dish on a cooling rack

5-Ingredient Maple Sweet Potato Casserole

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This 5-Ingredient Maple Sweet Potato Casserole maximizes the caramel and vanilla flavors of maple syrup and the natural sweetness of the potatoes to bring bold taste with just a few ingredients!
Course Sides
Cuisine American
Diet Vegetarian
Keyword 5 Ingredients or Less, Casseroles, Classic Side Dishes, Thanksgiving, Thanksgiving Side Dishes
Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Servings 10 servings

Equipment

Ingredients

  • 3 large sweet potatoes
  • 3 tablespoons unsalted butter or nondairy subs
  • ½ cup milk cows or unsweetened nondairy
  • ¼ cup maple syrup
  • ½ teaspoon salt
  • ½ teaspoon cinnamon optional
  • 1 ½ cups mini marshmallows

Instructions

  • In a large pot, bring 10 cups of water to a rolling boil.
  • Peel your sweet potatoes and remove any discoloration or lumps. Then, chop them into small chunks, about 2 inches in diameter to speed up their cooking time.
    3 large sweet potatoes
  • Boil sweet potatoes until fork-tender (usually 25-35 minutes).
  • Drain potatoes and add them to a large mixing bowl. For best results, use a potato masher or fork to mash sweet potatoes and remove any lumps.
  • Preheat your oven to broil (500°F).
  • Add butter and ¼ cup milk and use your hand mixer on high to mix until smooth. Assess consistency. We are aiming for light and airy (think mashed potatoes). Add more milk if necessary (up to ½ cup total).
    3 tablespoons unsalted butter, ½ cup milk
  • Add maple syrup, salt, and cinnamon (optional) and mix to combine.
    ½ teaspoon salt, ¼ cup maple syrup, ½ teaspoon cinnamon
  • Transfer sweet potatoes to a 9" x 13" glass baking dish and top with mini marshmallows. Stick your sweet potatoes under the broiler for 30 seconds - 1 minute, until marshmallows brown on top.
    1 ½ cups mini marshmallows

Notes

  • Make sure your sweet potato is super soft before removing it from the boiling water. You want to avoid any lumps!
  • Watch your marshmallows closely under the broiler. They go from golden brown to burnt very quickly!
  • This dish is a classic holiday recipe. For more like this, check out my comprehensive list of best Thanksgiving recipes.
  • For more recipes using delicious spuds, check out this list of Easy Sweet Potato Recipes