Brown the ground beef, onion, celery, and garlic. Drain. Stir in all remaining ingredients; except the cheese and peppers. Simmer 10 min. Meanwhile boil the peppers for 3 min. Drain. Place the peppers in a baking dish. Stir half the cheese into the meat mixture. Fill the peppers with the meat. Top with remaining cheese. Bake at 350 for 20 min.
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