Sour Cream Raisin Bars

I got this recipe out of an Amish style cookbook. It looked interesting and I had a whole bunch of raisins that needed somewhere to go so I gave it a whirl. Everyone liked it and we have been making it ever since. My daughter made this pan of them and they were yummy as usual.

1 cup butter or margarine, softened
1 cup packed brown sugar
2 cups all-purpose flour
2 cups quick oats
1 teaspoon baking powder
1 teaspoon baking soda
1/8 teaspoon salt

Filling:

4 egg yolks
1-1/2 cups raisins
2 cups (16 ounces)sour cream
1 cup sugar
1 tablespoon cornstarch

In a mixing bowl, cream the butter and brown sugar. Beat in flour, oats, baking powder, baking soda and salt.(Mixture should be crumbly).

Set aside 2 cups; pat remaining crumbs into a greased 9x13 baking pan. Bake at 350 degrees for 15 minutes. Cool. Meanwhile combine filling ingredients in a saucepan. Bring to a boil; cook and stir constantly for 5-8 minutes.

Pour over crust; sprinkle with reserved crumbs. Return to oven for 15 minutes.

Finished!