Raspberry Crumb Bars

Ingredients
- 1 c butter at room temp
- 12 c sifted powdered sugar
- 2 c all purpose flour
- 12 tsp salt
- 12 c rolled or quick oats
- 14 c chopped walnuts
- 34 c seedless raspberry preserves
Directions
- Position rack in the center of the oven and preheat to 375 degrees Butter a 9 x 9 pan