What You’ll Need
- Chocolate cake mix. Choose a box that makes a 9-by-13-inch cake and check the package for the ingredients needed to prepare it.
- Mini marshmallows. Scatter 3 cups over the cake as soon as it comes out of the oven.
- Chocolate frosting. Warm one 16-ounce tub of frosting just until it spreads easily.
- Chopped pecans. Sprinkle 1 cup over the frosting while it’s still soft so the nuts stick.
How to Spread Frosting Over the Marshmallows
Spoon the warm frosting over several spots on the cake, then gently spread it with the back of a spoon or an offset spatula. Light strokes help cover the marshmallows without dragging them into one spot.
How to Slice Mississippi Mud Cake
Let the cake sit for 15 to 20 minutes so the topping can settle. Cut it into five rows by three for 15 servings, wiping the knife between cuts if the marshmallows stick.
4-Ingredient Mississippi Mud Cake Recipe Card
Chocolate sheet cake topped with soft marshmallows, chocolate frosting, and chopped pecans.
- Bake time — Follow the cake mix package directions
- Rest time — 15 to 20 minutes
- Servings — 15
Ingredients
- 1 box chocolate cake mix, plus any ingredients called for on the package
- 3 cups mini marshmallows
- 1 tub (16 ounces) chocolate frosting
- 1 cup chopped pecans
Instructions
- Prepare and bake the chocolate cake in a 9-by-13-inch pan according to the package directions. Set the pan on a heat-safe surface.
- Sprinkle the mini marshmallows evenly over the hot cake so they begin to soften.
- Transfer the frosting to a microwave-safe bowl and warm it in short bursts, stirring between each, until smooth and spreadable. Gently spread it over the softened marshmallows.
- Sprinkle the chopped pecans evenly over the frosting. Let the cake rest for 15 to 20 minutes, then cut into 15 pieces and serve.