01 -
Heat a large skillet over medium-high heat. Add ground beef, diced onion, and minced garlic. Cook, breaking up beef into medium chunks, until thoroughly browned and cooked through. Drain excess grease and set skillet back on medium heat without adding the beef yet.
02 -
Add salted butter to the skillet and allow it to melt completely. Stir in all-purpose flour, whisking constantly to absorb the butter and create a smooth roux.
03 -
Slowly pour in beef broth while whisking vigorously to remove lumps. Increase heat to high and bring mixture to a gentle boil. Continue whisking and cook for 2-3 minutes until the sauce thickens slightly.
04 -
Reduce heat to medium. Whisk in sour cream and cream of mushroom soup until fully combined. Season with salt and black pepper to taste, adjusting seasoning as needed. If sauce thickens too much, add a splash more beef broth to reach desired consistency.
05 -
Return the cooked ground beef to the skillet, stirring to coat meat in the sauce. Allow to simmer gently for approximately 5 minutes to meld flavors and heat through.
06 -
Spoon the stroganoff mixture over cooked egg noodles or preferred side. Serve immediately.