In a Dutch oven or 6 quart pot heat 1 tablespoon of oil until shimmering. Add in onions and saute until translucent, about 5-8 minutes. Add in minced garlic and cook for an additional minute. Then add green pepper and saute for about 2 more minutes or until green pepper just begins to soften.
Add ground beef and cook over med-high heat until browned. Drain off any drippings from the meat.
Add the remaining ingredients. Stir together. Bring to a boil, and then simmer for 20-30 minutes.