Cut steak into bite sized pieces. In a pan coated with cooking spray, sauté steak until browned. Remove meat from pan. Sauté onion, and garlic in beef dripping until tender. Add spices, stirring constantly, about 2 minutes. (do not burn!)
Return steak to pan. Pour in broth and tomatoes. Bring to a boil. Cover, reduce heat, and simmer for 1-2 hours or until beef is tender. Add corn and red pepper and simmer uncovered for additional 20 minutes.
Garnish with cheese, sour cream, and scallions.