Spray 12-inch pizza pan with nonstick cooking spray; set aside.

In large saucepan over medium heat, heat butter. Stir in marshmallows until melted. Stir in popcorn until well coated.

Spread mixture evenly onto prepared pizza pan.

Drizzle red piping gel over “pizza” for “sauce.”

Cut small circles (about 1 1/4-inch diameter) from rolled fruit snack and place on pizza for “pepperoni” slices.

Decorate with jellybeans, coconut and candies, if desired. Cool completely before cutting into wedges.