Barbecue Beans

1 can Campbells Pork Beans
1 can Campbells Barbeque Beans
1 can red kidney beans
1 can pineapple tidbits (drained)
1 lb. ground beef
1 sm. onion (chopped)

Make sauce of:
1/2 c. catsup
1/2 c. Kraft barbeque sauce
1/2 c. water or pineapple liquid
2 tbsp. vinegar
1/4 c. brown sugar

Brown beef and onion and add dash of salt. Mix the sauce and heat. Pour over meat and beans.
Bake in moderate oven for 1 1/2 hours at 350 degrees. Take off cover for last 1/2 hour.