Pinto bean casserole

1 1/2 c pinto beans
1 lb ground beef
1 lg onion chopped
16 oz can tomatoes
1 T sugar
2 T catsup
2 T BBQ sauce
2 T A1 sauce
1 t salt
1 pkg jiffy corn bread mix

Brown ground beef and onion. Add beans, tomatoes and spices. Pour into 2 qt casserole dish. Make cornbread mix and cover mixture. Bake 400until done, approx 20 min.