Festive Slow-Cooked Beef Tips

Sprinkle beef with salt and pepper.In a large skillet, heat oil over medium-high heat.Brown beef in batches.Remove with a slotted spoon to a A bowl with a capacity of 3 liter containing or .slow cooker.

In same pan, add onion and celery; cook and stir until tender, 6-8 minutes.Add garlic; cook 1 minute longer.Add broth, wine, rosemary and bay leaf.Bring to a boil; cook until is reduced to about 2 liter 8-10 minutes.

Pour over beef in slow cooker; stir in mushrooms.Cook, covered, on low until meat is tender, 6-8 hours.Remove rosemary and bay leaf.

In a small bowl, mix cornstarch, water and vinegar until smooth; gradually stir into beef mixture.Serve with noodles.