3
In a large sauté pan, cook the beef until browned. Drain fat leaving about 1 Tbsp remaining. Add the onion, garlic, and season with salt and pepper. Cook until onion is just tender. Add the tomatoes, quinoa or rice, vinegar, oregano, and half of the dill. Season again to taste with additional salt and pepper. Stir and remove from heat. Stuff each pepper half with beef mixture.
4
In a large casserole pan, fit in the stuffed pepper halves and bake for 10 minutes. Remove from oven and sprinkle with the feta. Place back in oven and continue to cook for another 10-15 minutes or until heated through and hot. Garnish with the remaining 1 Tbsp chopped dill.