1 1/4 c. chocolate cookie crumbs
3 tbsp. sugar
3 tbsp. butter, melted
6 oz. (1 c.) semi-sweet baking chips
2 pkgs. (8 oz.) plus 1 pkg. (3 oz.) cream cheese, softened
1 c. sugar
3 eggs
1/2 tsp. vanilla
1/2 c. creamy peanut butter

Combine crumbs, 3 tablespoons sugar and butter, stirring until all crumbs are coated. Press firmly into bottom of pan.

Melt chocolate chips; set aside.

In mixer bowl, cream cheese and 1 cup sugar together until light and fluffy. Add eggs, one at a time, beating well after each addition. Stir in vanilla. Divide mixture in half.

Into one half blend melted chocolate. Into remaining half, blend peanut butter. Spoon chocolate and peanut butter mixtures alternately into prepared pan. Swirl mixtures together with table knife to create marbled pattern.

Bake at 300°F 60-65 minutes or until pick inserted in center comes out clean.

Cool, then refrigerate.