Season the beef with salt and pepper and set aside.
Heat a cast iron skillet over high heat until lightly smoking, add the butter and stew beef. Brown the beef on all sides. (Do not cook beef all the way through, just brown the outside). About 3 Minutes.
Add the browned beef to the slow cooker pot. In a large bowl, whisk together the beef stock, garlic, cornstarch, brown gravy packet, minced onion and worcestershire sauce. Pour over the beef and cook on low for 5-6 hours.
Beef will be down when fork tender and the gravy has thickened.
Serve over mashed potatoes, rice or egg noodles. Enjoy!
Video
Notes
Love mushrooms? You can add a small can of mushrooms or 1-2 cups of fresh sliced mushrooms if desired.
Place any remaining crockpot beef tips in an airtight container. They will keep in the fridge for up to 4 days.
Stew meat, beef chuck, round roast, or sirloin go great in this recipe. You may even enjoy trying it with venison.