Cake Batter Rice Krispies Recipe (From How Sweet Eats ) Ingredients: 3 Tbsp. butter 1 (10 oz.) bag of mini-marshmallows 1/4 cup yellow cake mix 6 cups crispy rice cereal 1 (1.75 oz.) container of sprinkles Method: Melt butter in a large saucepan over low heat and add marshmallows. Stir until they begin to melt, adding in cake mix one spoonful at a time so its combined. Stir in cereal so it is completely coated with marshmallow mixture. Sprinkle in half of the sprinkles and mix. Press into a baking dish (any size will do) and top with remaining sprinkles. Let sit for about 30 minutes before cutting. I find spraying a knife with nonstick spray helps to cut them. Tip: I actually increased the cake batter to 1/3 cup for my recipe to give it a little extra cake batter kick (the 1/4 cup seemed just a little too subtle to me), but add as much in as you like!