1
Preheat oven to 350 degrees F.
2
Blend butter, brown sugar and flour thoroughly with a fork until the mixture resembles coarse crumbs.
3
Put 1 cup of the mixture aside for topping.
4
Press remaining mixture into an 8x8x2 inch baking dish, sprayed lightly with cooking spray; bake for 15 minutes.
5
In another bowl combine sugar and cream cheese, mixing until smooth.
6
Thoroughly beat in egg, milk, lemon juice and vanilla.
7
Spread over the baked crust and sprinkle with remaining brown sugar mixture.
8
Bake for 25 minutes.
9
Let cool, then chill for at least 1 hour.
10
Cut into 16 squares; serve.