4 c. blueberries
1 strip lemon zest, finely chopped
1 c. plus 2 tbsp. all purpose flour
1 c. brown sugar
1/4 tsp. cinnamon
1/2 c. sweet butter, cut into pieces

Combine blueberries, lemon zest, 2 tablespoons flour and 1/3 cup sugar Pour into a buttered 9 inch square baking dish. Process remaining 1 cup flour, 2/3 cup sugar, and the cinnamon in a food processor just until blended. With machine running, add butter, several pieces at a time, processing until crumbly. Sprinkle over blueberries. Bake crisp in a preheated 375 degree oven until top is golden, about 30 minutes. Let cool.