1 1/2 C. crumble in 9 x 13 pan. Bake at 350 for 15 minutes.
Combine and cook egg yolks, sugar, cornstarch, sour cream and raisins over low heat. Bring to boil and boil for 5-10 minutes - stirring constantly. Pour over crust - sprinkle crumbs. Bake for 20 minutes.