Orange Butterscotch Cheesecake

1 1/4 cups old fashioned or quick oats, uncooked

1/2 cup packed brown sugar

2 Tablespoons flour

1/4 cup melted margarine

3 (8 ounce) packages cream cheese , softened

3/4 cup granulated sugar

2 teaspoons grated orange peel

1 teaspoon vanilla

4 eggs

Combine cream cheese, granulated sugar, peel and vanilla, mixing at medium speed of an electric mixer until well blended. Add eggs one at a time, mixing well after each addition, pour over crust. Bake at 325F 1 hour 5 minutes. Loosen cake from rim of pan. cool before removing rim of pan.

1/2 cup packed brown sugar

1/2 cup light corn syrup

1/4 cup margarine melted

1 teaspoon vanilla

Combine brown sugar, corn syrup and margarine in saucepan; bring to boil, stirring constantly. Remove from heat; stir in vanilla. Chill until slightly thickened. Spoon over cheesecake