Add diced onion, mushrooms, sour cream, cream cheese, cream of mushroom soup, brown gravy onion mix, and bouillon cubes into the crock pot on low heat.
Stir everything together good.
Let it cook for 3-4 hours.
Marinade the Stewing Beef (beef tips) in Worcester sauce
Stove Top
Cook the stewing beef (beef tips) in a skillet on low to medium heat.
Boil a pan of water and add oil. Once boiling add egg noodles.
Once beef and noodles are completely cooked, add the beef to the stroganoff sauce. Add pepper as desired. Drain and rinse (in cold water) the egg noodles