Blackberry Cherry Oatmeal Tart

Heat oven to 400°F. In 2-quart saucepan, mix berries, cherries, brown sugar, cornstarch and vanilla. Cook over medium-high heat, stirring occasionally, until mixture thickens. Cool 15 minutes.

In medium bowl, place cookie mix. Cut in butter, using pastry blender (or pulling 2 table knives through ingredients in opposite directions), until mixture is crumbly. Press 3 1/2 cups crumb mixture in bottom and up side of 11-inch tart pan with removable bottom. (Do not prick crust.) Bake 6 minutes or until golden. Cool completely on cooling rack, about 15 minutes.

Spoon berry mixture over crust. Sprinkle remaining 1/2 cup crumb mixture over top. Bake 15 to 18 minutes or until filling is bubbly and topping is golden brown. Cool completely.

In chilled small bowl, beat whipping cream and granulated sugar with electric mixer on high speed until soft peaks form. Remove tart from side of pan. Top with whipped cream.