Mix together the flour and brown sugar in a food processor (or mix by hand). Add butter and pulse until mixture resembles coarse crumbs (or cut butter in by hand). Add the water slowly while running the processor (or sprinkle and toss while mixing by hand) until moistened. Form into a ball, and press firmly and evenly onto the bottom and up the sides of a 9 inch tart pan or pie plate. Bake in a 400 degree oven for 10 - 15 minutes or until light brown. Cool completely.
In a medium mixing bowl stir together cream cheese, sour cream, sugar, and vanilla till smooth. Cover and chill for up to 4 hours or till ready to fill tart shell.
Sprinkle mint onto pastry. Using a spoon, spread cream filling evenly over the tart shell. Arrange fresh fruit on the filling. In a small saucepan heat jam just till melted. Cool. Drizzle melted jam over the fruit. Cut into wedges and serve immediately. Best if used within a day or two.