Brown the ground beef and onion. Drain any excess fat, if desired.
2 lbs ground beef, 1 large onion, chopped
Add the garlic, chili powder, dried mustard, crushed red pepper, cumin, oregano, salt, pepper and cook for another minute.
2 cloves garlic, minced, 3 tablespoons chili powder, 1 teaspoon dried mustard, 1 teaspoon crushed red pepper, 1 1/2 tablespoons cumin, 1 tablespoon dried oregano, 2 teaspoons salt, 1/2 teaspoon black pepper
Add the remaining ingredients, and simmer on low for at least 4 hours.
4.5 oz green chilies, chopped, 28 oz diced tomatoes, 6 oz tomato paste, 4 cups water, 32 oz kidney beans, undrained, 16 oz pinto beans, drained