HEAT oven to 325°F. Line 13x9-inch pan with foil, with ends of foil extending over sides. Mix cracker crumbs, 3 Tbsp. sugar and butter; press onto bottom of pan. Bake 10 min.

BEAT cream cheese, 1 cup sugar, flour and vanilla in large bowl with mixer until well blended. Add sour cream; mix well. Add eggs, 1 at a time, mixing on low speed after each just until blended. Pour over crust. Gently drop small spoonfuls of jam over batter; swirl with knife.

BAKE 40 min. or until center is almost set. Cool completely. Refrigerate 4 hours. Lift cheesecake from pan with foil handles before cutting to serve.