In a large Dutch oven cook the ground beef and chopped onion till meat is brown and onion is tender. Drain off fat
Stir in the undrained beans, tomatoes, and green chili peppers. Add the chili powder, garlic powder, oregano, ground red pepper, and pepper. Bring to boiling; reduce heat.
Simmer, uncovered, about 1 ¼ hours or till of desired consistency, stirring occasionally. Makes 12 (1-cup) servings.