Cream oleo or butter and brown sugar. Stir in flour (mixture will be crunchy..will have to use your hands. Press in ungreased 13x9x2 in. Baking pan. Bake in 350°F oven for 15 minutes. In saucepan, combine sugar and corn syrup; heat to boiling. Remove from heat. Add butterscotch pieces and peanut butter; stir till chips are melted, Stir in corn flakes. Spread over baked layer. Cool; cut into squares.