Preparation
Clean the mushrooms. Remove the stem ends and cut the mushrooms into small cubes.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_1_M.jpg)
Peel and finely chop the onion.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_2_M.jpg)
Heat 2 tbsp oil in a pan and fry the onions and mushrooms. Wash the thyme, shake dry, pick off the leaves and add to the pan.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_3_M.jpg)
Add salt and pepper, then cook over a medium heat, stirring, until all the liquid has evaporated. Allow to cool to room temperature and mix thoroughly with the veal roast.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_4_M.jpg)
Cut a pocket lengthways in the top side of the beef fillet, about 3cm deep.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_5_M.jpg)
Pipe the mushroom filling into the pocket using a piping bag.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_6_M.jpg)
Close the opening with cocktail sticks and tie the beef fillet with kitchen string to secure. Season with salt and pepper.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_7_M.jpg)
Heat 1 tbsp oil in a pan and fry the fillet until browned on all sides. Bake it in a small baking dish in the preheated oven at 120°C (100°C fan, gas 1) for about 1 1/4 hours.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_8_M.jpg)
Meanwhile, peel and finely slice the shallots.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_9_M.jpg)
Heat the remaining oil in a non-stick pan and fry the shallots until golden brown.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_10_M.jpg)
Add the maple syrup and let the shallots briefly caramelise, then pour in the vinegar and Madeira. Add the veal stock and star anise, and simmer, uncovered, over a medium heat for 20 minutes. At the end of the cooking time, season with salt and pepper.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_11_M.jpg)
Remove the fillet from the oven, remove the sticks and string. Wrap the meat in foil and allow to rest for 5 minutes. Cut into slices and serve with the Madeira sauce.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000512/000512_step_12_M.jpg)