Stuffed Peppers

[ingredients title=”Ingredients”] 6 bell peppers 2 1/2 cups chunky tomato sauce 1/2 onion, very thinly sliced 1 cup beef broth 1/4 teaspoon red pepper flakes 1 1/2 pounds lean ground beef 1 1/2 cups cooked rice 1/2 cup freshly shredded Parmigiano – Reggiano cheese 1/4 cup chopped fresh flat-leaf parsley 1/2 cup chunky tomato sauce, […]