Brown ground beef and onion; drain well. Mix with other ingredients and cook overnight in crockpot on low heat. Stir occasionally. Serve with rice.
NOTE: In a 3 quart crockpot, you may have to leave out some of the juice from tomatoes or it will run over. usually, when making this stew, I cook a 3 pound chicken and remove meat from bones (instead of the more expensive canned chicken). Also I substitute ground turkey for the ground beef. Even with these changes, this is a prize winning recipe.