1Cream butter with sugar. add eggs, one at a time and cream well. Add vanilla & flour and mix well.
2Grease and flour a 10x14x2" pan. Place 1/2 of the batter in the pan and spread out. Pour a can of comstock pie filling over the batter and spread.( can use blueberry, apple, strawberry or cherry). Then spread the remaining 1/2 batter over fruit filling.
3Bake 375 degrees for 30-35 minutes. Cool and cut into squares.