In large bowl, combine all casserole ingredients; mix well. Pour into ungreased 8" square (1 1/2 qt) baking dish. Cover tightly; refrigerate 8 hours or overnight.
Heat oven to 350. In small bowl, combine topping ingredients; mix well. Stir mixture in casserole; sprinkle with topping. Bake 45 - 55 minutes or until golden brown and bubbly. 4-5 servings.