Preheat oven to 350°.
Combine first 5 ingredients in a mixing bowl; beat with a mixer at medium speed until combined. Lightly spoon flour into dry measuring cups; level with a knife. Stir in flour.
Press mixture into a 13 x 9-inch pan coated with cooking spray. Spread marshmallow creme over dough. Sprinkle evenly with peanuts and chocolate chips.
Bake at 350° for 20 to 22 minutes or until lightly browned. Cool completely.