Crockpot Beef Tips 1 - 3 lbs stew meat 1 can 7up, Sprite or other lemon-lime soda (can be reg or diet) 1 pkg Onion Soup Mix 1 pkg Brown Gravy Mix 1 can Condensed Mushroom Soup 1 can Mushroom pieces (optional)  Mix all together and cook on low for 6 - 8 hrs in slow cooker. Serve over buttered egg noodles.