Heat oven to 350°.

Stir chopped peanuts, flour, oats, brown sugar, baking soda, salt and egg in large bowl.

Stir in margarine until mixture is crumbly.

Press in ungreased rectangular pan, 13x9x2 inches. Bake 10 minutes.

Spoon marshmallow creme over hot layer. Let stand 1 minute; spread evenly.

Drizzle topping over creme; sprinkle with 1 cup peanuts.

Bake until golden brown, about 20 minutes. Let stand until cool, then loosen edges from side of pan with wet knife. Cut into 3x1.5 inch bars with wet knife.