3 Bean And Cornbread Casserole 2 (21 ounce) cans baked beans 2 (15 ounce) cans kidney beans, drained 1 (8.5 ounce) can lima beans 1 (8 ounce) can tomato sauce 1/4 cup ketchup 2 tablespoons packed brown sugar 2 tablespoons minced onion 1/2 teaspoon dry mustard 1 teaspoons salt, divided 1/4 teaspoon pepper 2/3 cup all-purpose flour 1/3 cup yellow cornmeal 1 tablespoon sugar 1 teaspoon baking powder 1 egg 1/2 cup milk 2 tablespoons butter, softened Preheat oven to 425. In bowl, combine baked beans, kidney beans, lima beans, tomato sauce, ketchup, brown sugar, onion, mustard, 1/2 teaspoon salt and pepper. Pour into 9x13 inch baking dish. In another bowl, remaining ingredients until smooth. Spoon evenly over bean mixture to within 1 inch of edges. Bake for 25 to 30 minutes, or until topping is deep golden brown.