No Peek Beef Tips

No peek beef tips for dinner. 2 lbs stew meat, one can cream of mushroom, one packet brown gravy, one envelope beefy onion soup mix and one can of water. Mix together in a 13x9 pan and cover with foil. Bake at 300 for 3 hours. No peeking! Meat is super tender and delicious. Serve with mashed potatoes or noodles.