Cake-Batter Rice Krispie Treats

I made these once and they were soo yummy. I promised a few friends I'd post the recipe: so here it is. Enjoy!

3 tablespoons butter
1 10-ounce bag of mini marshmallows
1/4 cup funfetti cake mix
6 cups rice krispies cereal
1 1.75-ounce container of sprinkles (I may or may not have read that as 11.75 oz, whoops!)

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 (don't wait too long, cus they get really stiff and hard to cut-trust me!) I find spraying a knife with nonstick spray helps to cut them.