1 c. butter
1 egg
1 tsp. vanilla
1 3/4 c. flour
1/2 c. sugar
1/2 c. brown sugar
1 c. peanuts
1 c. miniature marshmallows
1 (6 oz.) pkg. chocolate chips

Mix butter, egg, vanilla, flour and sugars; bake in an ungreased 13 x 7-inch pan at 375°F for 12 minutes.

Combine peanuts, miniature marshmallows and chocolate chips. Spread this on the batter. Place back in oven until marshmallows start to turn brown. Cut in squares.