1/2 c. butter, softened
3/4 c. firmly packed light brown sugar
1 egg
1 1/4 c. all-purpose flour
1/2 tsp. baking soda
1 c. miniature marshmallows
3/4 c. candy-coated chocolate pieces
3/4 c. peanut candy-coated chocolate pieces

Preheat oven to 350 degrees. Grease 12 inch pizza pan or skillet. In medium bowl with electric mixer at medium speed, cream butter and sugar until light and fluffy, about 1 minute. Beat in eggs. At low, stir in flour and baking soda until well blended.

Evenly spread dough into prepared pan. Bake 20 minutes or until lightly browned; sprinkle marshmallows and candies on cookie during last 5 minutes of baking. Cool 10 minutes in pan on wire rack. To serve, cut cookie into 16 wedges.