Melt butter in a large saucepan. Add in marshmallows and stir until melted.
Remove pan from heat and stir in Malt-O-Meal Crispy Rice cereal.
Place mixture on parchment paper. With a buttered spatula or hands, press onto mixture until about 1 inch thick.
Allow to cool and cut into desired tree and holiday ornament shapes.
Decorate with icing, pretzel sticks, sprinkles, and colored foil candies.
Enjoy, share, and tag us on social media @maltomealcereal!