Creating Slow Cooker Beef Stroganoff is simple when you follow these easy steps:

1. Prep Ingredients: Start by preparing the beef, onion, mushrooms, and garlic.

2. Combine in Slow Cooker: In the slow cooker, place the beef stew meat, diced onion, sliced mushrooms, and minced garlic.

3. Add Liquid Ingredients: Pour in the beef broth and Worcestershire sauce. Season with salt, black pepper, and paprika, stirring to combine.

4. Cook: Cover the slow cooker and set it to low for 8 hours or high for 4 hours. Stir occasionally if possible, but it’s not necessary.

5. Finish the Sauce: Once the beef is tender, stir in the sour cream. If desired, mix cornstarch with a small amount of water to create a slurry for extra thickness, and then add it to the beef mixture.