Combine the beef, green pepper, scallions, and garlic in mixing bowl. Add the cumin, oregano, thyme, paprika and red pepper flakes and salt to taste and mix until blended. Shape the meat into 6 patties.

Broil, fry on or grill the meat to desired doneness. Place hamburgers on toasted buns and top with sliced tomatoes and sour cream or your favorite topping.