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–+ servings

Marshmallow Sprinkle Cake Bars

These couldn’t be easier to make. They use a boxed cake mix as the base, and topped with melted marshmallows, chocolate chips, and sprinkles for the perfect party food!
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Prep Time: 10 minutes
Cook Time: 30 minutes
Total Time: 40 minutes
Servings: 12 servings

Ingredients

  • 1 box devils food cake mix
  • ¼ cup unsalted butter - melted
  • 1 cup milk
  • 2 eggs
  • 2 cups mini marshmallows
  • 1 cup chocolate chips
  • 2 Tbsp sprinkles

Instructions

  • Preheat the oven to 350°F. Spray a small casserole dish with nonstick cooking spray (will also work in square or circle baking dish).
    White rectangular baking dish and cooking spray on a counter.
  • Add cake box contents to a large bowl along with egg, milk, and melted butter (or follow boxed cake mix ingredients and instructions). Mix together.
    Two images of a large white bowl. First is dry cake mix, eggs, milk and melted butter in a bowl. Second is chocolate cake batter in a bowl with a spatula.
  • Pour batter into prepared baking dish. Bake for 25-30 minutes, or until cake is almost fully set.
    Two images of a white baking dish with handles: First is chocolate cake batter in a baking dish. Second is baked chocolate cake in the baking dish.
  • Remove from oven, then add marshmallows, chocolate chips and sprinkles on top. Place back in the oven for 1-3 minutes to melt.
    Remove and let cool completely. Then place in the fridge to chill for 1-2 hours. Marshmallows and chocolate chips will need to harden and before slicing.
    Two images of a white baking dish with handles: first is unmelted chocolate, marshmallows and sprinkles on top. Second is melted ingredients after heating in oven.
  • Once cooled, slice into squares. Serve and enjoy!
    Sliced dessert with melted marshmallows and chocolate on top. A small knife is beside the baking dish.

Recipe Notes:

  • Leftovers can be stored in an airtight container in the fridge up to 4-5 days.
  • Follow the boxed cake mix instructions for the best results. Each cake box will vary in ingredients and cooking times.
  • Once you add the toppings, keep an eye on them in the oven. As soon as they begin to melt you can remove the cake. Keeping it in the oven too long can result in an overbaked cake.
  • Feel free to change up the toppings! Chopped nuts, crushed pretzels, candies, gummy worms, and M&Ms are all fun additions that kids will love. (Add the gummies after the cake is out of the oven so that they won’t melt).
  • The cake needs to be chilled completely before slicing, otherwise, the chocolate chips won’t keep their shape.
  • Slice the bars in advance before serving for an easy grab-and-eat style dessert.

Nutrition Info

Calories: 293kcal | Carbohydrates: 42g | Protein: 4g | Fat: 14g | Saturated Fat: 6g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 4g | Trans Fat: 1g | Cholesterol: 43mg | Sodium: 326mg | Potassium: 161mg | Fiber: 1g | Sugar: 27g | Vitamin A: 192IU | Calcium: 85mg | Iron: 2mg

The nutritional information provided is an estimate and is per serving.

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