Molding Rice Krispies treats into shapes requires creating a gooey mixture by adding butter. Molding the Rice Krispies treats with cookie cutters before they fully harden provides a more flexible consistency to work and manipulate. You can choose between using chocolate or vanilla Kellogg's Rice Krispies cereal for recipes; you can also can add ingredients such as chocolate chips or M&Ms. Rice Krispies treats take about 5 minutes to prepare.
Turn your stove top burner to low. Heat and melt 3 tbsp. of butter in a saucepan. Add 1 to 2 tsp. of butter for extra gooey Rice Krispie treats.
Add one 10-oz. package of large marshmallows or 4 cups of miniature marshmallows. Stir the marshmallows and butter until they melt.
Remove your saucepan from the heat. Pour 2 cups of Rice Krispies into the saucepan. Coat your spatula with butter to prevent sticking when stirring the mixture. Fold the ingredients with your spatula.
Spray a non-stick cooking spray to the bottom and sides of your 15-by-10-by-1-inch pan. Pour your Rice Krispie treat mixture into the pan. Allow the mixture to cool at room temperature for 2 to 3 minutes.
Spray your cookie cutter with non-stick cooking spray. Place the cookie cutter on top of the Rice Krispie treat mixture. Push down and apply pressure until the cookie cutter touches the bottom of the pan. Remove the shape and place it on a platter.
Continue cookie-cutting until you use all the mixture. Place your Rice Krispie treats in a sealed container or cover them in plastic wrap to keep them moist.