Roast beef with garlic mushrooms from the oven

Preheat the oven to 200 ° C. Let the roast beef come to room temperature. Press the garlic. Cut the onion into thin pieces.

Heat over half of the butter in a frying pan and stir in the garlic and thyme. Add mushrooms and onion tarts and stir-fry 1-2 minutes until they are covered with butter. Divide the mushrooms with onion in the roasting pan and roast them in the oven in 25-30 minutes until brown and done. Scoop occasionally.

Rub the roast beef with salt, freshly ground black pepper and mustard. Add the rest of the butter to the butter in the frying pan and heat until the foam dries. Put the roast beef in it and bake the meat on high heat for 20-25 minutes around brown and rosé inside (when using a meat thermometer: 55 ° C).

Place the roast beef on a shelf, cover with aluminum foil and let the meat rest for 5 minutes. Cut the roast beef into thin slices and serve with the mushrooms on warm plates.