Put beef, onion, mushrooms, broth, soup, Worcestershire, garlic powder, salt, and pepper in crockpot. Don’t fuss—just dump and level.

Cook on low 7–8 hours or high 3–4 hours until beef is tender.

Stir in sour cream 15 minutes before serving; do not boil after adding.

Serve over cooked egg noodles. Garnish with parsley if you want.