1/2 c. firmly packed brown sugar
1/2 c. peanut butter (I use crunchy & it is great!)
1/4 c. butter, softened
1 c. flour
1 c. (6 oz. pkg.) chocolate chips

FILLING:

1 pkg. (8 oz.) cream cheese, softened
1/2 c. sugar
1/4 c. peanut butter
1 tsp. vanilla
2 eggs
1 c. (1/2 pt.) whipping cream, whipped & sweetened

In small mixer bowl, cream brown sugar, peanut butter and butter until light and fluffy. Add flour; blend until crumbly. Sprinkle into ungreased 13 x 9 inch baking dish. Bake at 350 degrees for 10-15 minutes until golden brown. Set aside half of crumb mixture (about 1 cup) for topping. Lightly press remaining crumb mixture over bottom of pan.

Prepare filling. Pour over crumb mixture in pan. Melt chocolate chips; drizzle over filling. Gently cut through to marble. Sprinkle with reserved crumbs; press in slightly. Freeze at least 2 hours or until serving. Remove from freezer 1 minutes before serving.

Filling: In small mixture bowl, combine cream cheese, sugar, peanut butter and vanilla; beat at medium speed until smooth and creamy. Add eggs, one at a time, beating well after each. By hand, fold in whipping cream.

Tip: If desired, you may substitute 2 cups (4 1/2 ounce carton) frozen whipped topping.