
Crock Pot Beef Stroganoff is easy to make with tender chunks of beef, mushrooms and onion in a rich and creamy sauce. Serve it over egg noodles, mashed potatoes, pasta or rice for a hearty, comforting meal.
Heat olive oil in a large skillet over medium-high heat. Add the beef and sprinkle with the salt and pepper. Cook until the beef is browned on all sides. Transfer beef to the slow cooker.
Add the butter to the skillet. Once melted, add the onion and mushrooms. Cook, stirring often, until onion and mushrooms have softened, about 5 minutes.
Add the garlic and flour and cook, stirring, for 30 seconds. Stir in the beef broth. Cook for 1-2 minutes, stirring and scraping up any browned bits from the bottom of the pan, until thickened. Transfer contents of the skillet to the slow cooker.
Stir the Worcestershire sauce and dried thyme into the slow cooker.
Cover and cook on low for 6-8 hours or high for 3-4 hours.
Stir in the sour cream (or plain Greek yogurt). Taste and add more salt and pepper, if needed. Serve over egg noodles, mashed potatoes, rice, etc.