Sour Cream Raisin Bars

Ingredients

• 2 cups raisins, cooked in 1/2 cup water for 10 minutes
• 1 cup brown sugar
• 1 cup butter
• 1 1/2 cups oatmeal
• 1 teaspoon baking soda
• 1 3/4 cups flour
• Filling: 3 egg yolks
• 1 1/2 cups sour cream
• 1 cup sugar
• 2 1/2 tablespoons cornstarch
• 1 teaspoon vanilla
• 1/2 cup walnuts or pecans, chopped