Peanut Butter Squares

1 cube margarine
1 c. corn syrup
1 c. sugar
1 c. creamy peanut butter
1/2 tsp. vanilla
6-7 c. corn flakes

Melt margarine in a saucepan. Add corn syrup and sugar. Bring to a boil and boil for 1 minute. Remove from heat and stir in peanut butter and vanilla until peanut butter is dissolved. Pour over corn flakes. Stir until corn flakes are well coated. Press into 9x13 inch buttered pan. For thicker squares, use 9x9 inch pan. Cool and cut into squares.