1/2 c. brown sugar
1/4 c. butter
1/2 c. peanut butter
1 c. flour

Cream brown sugar, butter and peanut butter. Add flour and mix. Sprinkle into a 9 x 13 inch pan. Bake at 350 degrees for 10 minutes, stirring occasionally. Cool. Reserve 1/3 mixture for the top. Press remaining in bottom of pan.

FILLING:

1 (8 oz.) pkg. cream cheese
1/2 c. peanut butter
1 tsp. vanilla
1/2 c. sugar
2 eggs
2 c. Cool Whip
1 c. chocolate chips

Combine first 4 ingredients and combine until smooth. Add eggs, one at a time. Fold in Cool Whip. Pour over crust. Melt chocolate chips and drizzle over filling. Sprinkle with reserved crumbs and freeze.