Cake batter AND rice krispie treats?! Two of my favorite things combined plus rainbow sprinkles, you just can't go wrong! It's like rice krispie treats on steroids... Stuff You'll Need: 3 tbsp. butter 1 10 oz. bag of mini marshmallows 1/4 cup yellow cake mix 6 cups Rice Krispies cereal 1 1.75 oz. container of sprinkles Let's Play! In a large saucepan melt butter over low heat. Add marshmallows and stir until they begin to melt. Stir in cake mix one spoonful at a time until thoroughly combined. Pour in cereal and fold until completely covered in marshmallow mixture. Fold in half of the sprinkles. Press into a baking dish (I used a 9x13 pan) and cover the top with the remaining sprinkles. Let harden for at least 30 minutes before cutting. Enjoy!