Nantucket Blueberry Gingerbread
["1 1/2 c. all-purpose flour", "3/4 tsp. ground cinnamon", "3/4 tsp. ground ginger", "1/2 tsp. baking powder", "1/2 tsp. baking soda", "1/4 tsp. salt (optional)", "1/2 c. milk", "1/2 c. margarine", "1/2 c. molasses", "1/4 c. packed brown sugar", "2 beaten eggs", "1 c. fresh or frozen blueberries"]
["Sift together flour, cinnamon, ginger, baking powder, baking soda and salt.", "Set aside."]
["flour", "ground cinnamon", "ground ginger", "baking powder", "baking soda", "salt", "milk", "margarine", "molasses", "brown sugar", "eggs", "blueberries"]