01 -
In a large skillet over medium-high heat, cook ground beef with diced yellow onion and minced garlic, breaking beef into crumbles until thoroughly cooked.
02 -
Drain ground beef mixture to remove surplus fat, then set the beef aside while reserving the skillet.
03 -
Return skillet to medium heat and melt salted butter. Whisk in all-purpose flour until fully blended and the mixture absorbs the butter.
04 -
Gradually pour in beef broth, whisking constantly. Increase heat to high and continue whisking for 2–3 minutes until the sauce slightly thickens and is smooth.
05 -
Reduce heat to medium. Whisk in sour cream and cream of mushroom soup until the sauce is completely uniform.
06 -
Season with salt and black pepper to taste. If the sauce thickens excessively, add a small amount of beef broth to adjust the consistency.
07 -
Return the cooked ground beef mixture to the skillet and stir until reheated and well combined.
08 -
Spoon the finished beef stroganoff over cooked egg noodles and serve immediately.