Templeton Hills Sloppy Joes

2 tablespoons olive oil
1 onion chopped
1 pound ground beef
1 6-ounce can spicy V-8 juice or 1 14-ounce can of diced tomatoes with peppers
1 cup ketchup
4-6 hamburger buns

Heat olive oil in a pan over medium heat. Add onion and sauté until translucent. Brown meat, add V-8 juice and ketchup. Simmer until most of the liquid has been absorbed, 15-20 minutes. Toast buns and top open faced with meat.