Blueberry Streusel

1/2 cup butter

1/2 cup sugar

1 egg

2 cups all-purpose flour

2 teaspoons double-acting baking powder

1/2 teaspoon baking soda

1/4 teaspoon salt

1/2 cup buttermilk

2 cups fresh blueberries

1/4 cup butter -- cold

1/2 cup flour

1 teaspoon cinnamon

1/2 teaspoon ground nutmeg

1/2 cup sugar

Cream butter and sugar. Beat in egg. Sift dry ingredients together and add, alternately with buttermilk, to butter mixture. Pour into well-greased 9 x 13 pan. Top with blueberries. Mix sugar, flour, and spices. Cut butter into tablespoons and blend into dry ingredients with a pastry blender. Mixture should be crumbly. Sprinkle over blueberries. Bake at 350 degrees for 35 minutes.