Large pot, spoon to mix with, throw away 13 by 9 cake pan, no stick cooking spray, spatula, 3 tablespoons of butter, one package marshmallows, 6 cups rice crispy treats.

Melt butter in a large pot, add marshmallows stir in until melted, remove from heat and stir in rice krispies mix well. Use spatula to press into pan, cool for two hours cut, store and serve.