Delicious pastry bars topped with your favorite jam and a crumble sweet topping.
Preheat oven to 350°F.
Grease a cookie sheet with butter.
In a large bowl cream together butter and sugar until light and fluffy.
Beat in eggs and vanilla until combined.
In a medium bowl mix together 3 1/2 cups flour and salt.
Gradually add to butter mixture to form thick batter.
Spread 3/4 of the batter evenly over surface of the prepared cookie sheet. Reserve 1/4 of the dough for the topping.
Next spread on an even layer of jam.
Blend remaining 1/2 cup of flour with the rest of the dough. Crumble on top.
Bake 35 minutes or until crust is golden brown.
Cool completely and cut into bars.
Dust bars with confectioners' sugar.