Rice Krispie Treats

Here's the classic Rice Krispie treat - more for my reference than anything. I think there might be two different versions, the one from the Rice Krispie box that uses more cereal, and the one from the marshmallow bag that uses more marshmallows (the one I prefer) :).

1/4 cup butter
1 pkg large marshmallows - Kraft
6 cups Rice Krispies

Melt butter in large saucepan over low heat. Add marshmallows and stir until completely melted. Remove from heat.

Mix in Rice Krispies. Stir until well coated.

Spread the mixture using a buttered spatula or waxed paper evenly into a 9x13 pan coated with cooking spray.