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Mom’s Sweet Potatoes Recipe

Deliciously baked sweet potatoes with a sugary glaze and perfectly crunchy marshmallows on top, make for the perfect side dish.
Prep Time20 mins
Cook Time30 mins
Total Time50 mins
Course: Side Dish
Cuisine: American
Keyword: Easy Thanksgiving Side dish, Mom's sweet potatoes, Sweet Potatoes
Servings: 10
Calories: 342kcal


  • large pot
  • 9x13-inch Baking Pan


  • 4 pounds yellow sweet potatoes (about 5 to 6)
  • 3 Tablespoons butter divided
  • ¼ cup karo syrup divided
  • ½ cup brown sugar divided
  • 1 (10 ounce) bag mini marshmallows


  • Heat oven to 350 degrees.
  • Boil sweet potatoes for about 20-30 minutes until fork tender. Let cool.
  • Spray a 9 x 13 inch pan with non stick cooking spray.
  • After the sweet potatoes are cool, slice into 1 inch spears. Lay half of them in the pan.
  • Cut up 1 1/2 tablespoons of butter into small pieces and spread all over the sliced sweet potatoes.
  • Then drizzle 1/8 cup of karo syrup over all of the sweet potatoes. Then sprinkle 1/4 cup of brown sugar over the top.
  • Repeat layers - add more sweet potatoes, then top with the rest of the butter, karo syrup, and brown sugar.
  • Cook in oven until heated through and butter is melted. About 30 minutes.
  • Remove from oven and cover the top with marshmallows. Return to oven cook until marshmallows are golden brown.
  • (This can also be made ahead of time and stored in the fridge. Cook until heated through and then add marshmallows.)


Thanksgiving can be crazy, but luckily, this is a dish that can be made ahead of time and stored in the fridge. Don’t cook until you are about ready to eat.
It’s best to eat this recipe soon after taking it out of the oven. We usually make the sweet potatoes the night before, then the afternoon of thanksgiving, we cook it right before we eat. Cook until heated through and then add marshmallows.
We recommend not adding the marshmallows until after it is cooked a little, to avoid burning. If you store them overnight, they will get soggy with all the gooey goodness in the pan.


Calories: 342kcal | Carbohydrates: 77g | Protein: 3g | Fat: 4g | Saturated Fat: 2g | Trans Fat: 1g | Cholesterol: 9mg | Sodium: 161mg | Potassium: 629mg | Fiber: 5g | Sugar: 41g | Vitamin A: 25845IU | Vitamin C: 4mg | Calcium: 67mg | Iron: 1mg