Tender beef stew meat slow cooked with sliced onion in a thick, savory gravy made with brown gravy mix, cream of mushroom soup, beef broth, and Worcestershire sauce.
In a bowl, add the cream of mushroom soup and slowly whisk in the cold beef broth until mostly smooth.
Stir in the brown gravy mix, cornstarch, and Worcestershire sauce. A few small lumps are fine.
Add the beef stew meat and sliced onion to the crockpot.
Pour the gravy mixture over the beef and onions.
Cover and cook on high for 5–6 hours or low for 7–8 hours, until the beef is tender.
Stir everything together before serving and taste before adding any salt.
Notes
For extra flavor, sear the beef in a little oil over medium-high heat before adding it to the crockpot. This step is optional if you want to keep the recipe dump-and-go.