Oven 350 degrees F.
FOR CRUST: Cream butter, sugar, add flour and salt. Press into 8 x 8 inch pan. Bake 20 minutes at 350=B0.
FOR FILLING: Combine ingredients. Pour over hot crust. Bake 20-25 minutes. Sprinkle with 4z sugar. Cool in pan. Cut in squares.
Store in tin box between layers of wax paper.