Rainbow Lucky Charms™ Frosted Cookie Bars

Preparation

1. Heat oven to 350°F. Line 13x9-inch pan with foil, leaving foil overhanging at 2 opposite sides of pan; spray with cooking spray.
2. In large bowl, mix cookie mix, softened butter and egg with spoon until soft dough forms. Press dough in bottom of pan. Bake 18 to 23 minutes or until golden brown. Cool completely on cooling rack, about 1 hour. Remove bars from pan by lifting foil; peel foil away.
3. Divide frosting into 3 small bowls; tint frosting with food colors to desired pink, yellow, blue colors. Drop colors of frosting by mounded spoonfuls onto cookie bar in a random pattern. With offset metal spatula, spread frosting by carefully swirling the different colors together. Top with cereal and sprinkles. To serve, cut bars into 6 rows by 4 rows.

Tips

• We like using red, yellow and blue food colors for the frosting colors, tinted to match the colors in the Lucky Charms™ cereal marshmallows. Try different colors to switch up the look!
• Using a flat, offset metal spatula makes swirling the frosting a breeze. If you don’t have one, use a butter knife or bagel spreader.