
1 1-pound bag frozen blueberries, thawed,
drained
1 1-pound bag frozen raspberries,
thawed, drained
1 1-pound bag frozen blackberries,
thawed, drained
1 teaspoon vanilla extract
Preheat oven to 375F. Butter and flour 13x9x2-inch
glass baking
dish. Blend 1 3/4 cups flour, 1 1/4 cups sugar,
cinnamon, and salt
in processor until just combined. Add butter; using
on/off turns,
cut in until moist clumps form. Press half of flour
mixture onto
bottom of pan.
Mix all berries, vanilla, 1/3 cup flour, and 1
1/4 cups sugar in
large bowl. Spoon over dough in pan. Sprinkle remaining
flour mixture
over. Bake until topping is brown and cooked through,
about 50
minutes. Cool 15 minutes before serving.
