Blueberry Betty - cooking recipe

Ingredients

1 qt. blueberries (fresh or frozen)
1 Tbsp. lemon juice
1/2 tsp. cinnamon
1 c. all-purpose flour
1 c. sugar
1/2 c. (1 stick) cold butter or margarine, cut into 6 pieces

Preparation

For serving:
vanilla ice cream or frozen yogurt or sweetened whipped cream can be used.