Turn your favorite breakfast cereal into a delicious dessert bar with these colorful Lucky Charm Marshmallow Treats! These no-bake cereal bars are super easy to make and perfect for St. Patty's Day.
In a large non-stick pan, melt butter over medium-high heat. Once melted add sugar and marshmallows, stirring until marshmallows melt completely. Remove from heat and quickly fold in Lucky Charms.
Transfer mixture to prepared pan and spread evenly using a buttered spatula. When cooled, cut into squares and serve immediately. Can be stored in an airtight container, but are best served fresh.