1: In a bowl, season the beef with salt, pepper, and italian seasoning.
2: Add the flour and toss evenly to coat the beef.
3: Add the beef to a slow cooker on the brown/sauté setting to brown the outside.
4: Once browned, add the sautéed onions, mushrooms, dijon, worcestershire, garlic, beef bone broth, and beef bouillon paste.
5: Stir to mix well and set the slow cooker to high for 5 hours.
6: After 5 hours, open the slow cooker and add the slurry (mix 1/4 cup water + 1/8 cup flour).
7: Pour in the sour cream or greek yogurt and stir well to thicken the sauce.
8: Serve over egg noodles and garnish with green onion.
