Oven Rice Krispie Treats:
Spray a 9x13 baking dish with nonstick cooking spray.
Cut 6 tablespoons of butter into slices, place them in the bottom of the dish.
Add 1 bag of marshmallows.
Pour in 6 cups of Rice Krispies.
Bake at 350° for 20 minutes.
Stir, add 2 more cups of Rice Krispies and continue to stir until everything is mix together.
Cut into bars and enjoy.