1 (12-ounce) package frozen blackberries, unthawed |
1 (12-ounce) package frozen raspberries, unthawed |
1 (12-ounce) package frozen blueberries, unthawed |
1 1/2 cups sugar |
1/2 cup all-purpose flour |
1/4 cup butter or margarine, melted |
1 teaspoon vanilla extract |
1 (15-ounce) package refrigerated piecrust |
1 large egg, lightly beaten |
1 tablespoon sugar |