Topping:

1/2 cup sugar
1/4 cup flour
1/2 tsp. cinammon
1/4 cup soft butter
1/2 cup walnuts

For cake, beat together:

3/4 cup sugar
1/4 cup soft butter

Add one egg.

Alternately add dry ingredients with milk, beginning and ending with dry ingredients:

2 cups sifted flour
2 tsp. baking powder
1/2 tsp. salt

1/2 cup milk

Fold in 2 cups washed blueberries.

Bake in 9 inch square or round greased pan at 375 for 45 minutes.