Place fruit in ungreased 8 x 8" baking pan*. Stir together flour, sugar and cinnamon; blend in mayonnaise until mixture resembles coarse crumbs. Sprinkle/spread over fruit.
Bake 35-40 minutes at 350° or until browned. *If using a glass-baking pan, reduce oven temperature to 325°.
Keep blueberries at their freshest by storing them unwashed in the refrigerator. Wash the berries just before you use them.
Submitted by: Trisha