Beef Wellington
Ingredients:
For the Beef Wellington:
- 2.5 lb beef tenderloin, center-cut 
- Olive oil, for searing 
- Salt and freshly ground black pepper 
- Dijon mustard, for brushing 
- 8-10 slices of Parma ham (or prosciutto) 
- 1 batch of mushroom duxelles (see below) 
- 2-3 crepes (see crepe recipe below) 
- 1 lb puff pastry, thawed if frozen 
- 2 egg yolks, beaten 
For the Mushroom Duxelles:
- 1.5 lbs button or cremini mushrooms, finely chopped 
- 2 shallots, finely chopped 
- 4 cloves garlic, minced 
- 2 sprigs thyme, leaves only 
- Salt and pepper, to taste 
- 2 tablespoons olive oil 
For the Crepes:
- 1 cup all-purpose flour 
- 2 eggs 
- 1/2 cup milk 
- 1/2 cup water 
- 2 tablespoons melted butter 
- pinch of salt 
- pinch of thyme 
Instructions:
Prepare the Beef:
Season the beef tenderloin generously with salt and pepper.
In a hot skillet with olive oil, sear the beef on all sides until browned.
Set the beef aside and brush it all over with Dijon mustard.
Make the Mushroom Duxelles:
- In a large pan, heat the oil over medium heat. Add mushrooms, shallots, garlic, and thyme. Cook until all the moisture has evaporated and the mixture is a paste-like consistency. Season with salt and pepper. Let cool. 
Prepare the Crepes:
- Whisk together flour and eggs. Gradually add milk and water, stirring to combine. Add melted butter and salt. 
- In a small skillet over medium heat, pour in enough batter to cover the bottom. Cook for about 2 minutes per side. Set aside. 
Assemble the Beef Wellington:
- Lay out a large piece of plastic wrap. Place crepes on the plastic, slightly overlapping, to create a rectangle. 
- Lay the Parma ham slices over the crepes. 
- Spread a layer of mushroom duxelles over the ham. 
- Place the beef tenderloin in the center and roll everything tightly using the plastic wrap. Chill in the fridge for 15 minutes. 
- Roll out the puff pastry to a size that will encase the beef. 
- Unwrap the beef from the plastic and place it in the center of the pastry. Brush the edges of the pastry with beaten egg yolks. 
- Fold the pastry over the beef, cutting off any excess, and seal well. Brush the entire pastry with more egg yolk. 
- Chill again for 15 minutes. 
Cook the Beef Wellington:
- Preheat the oven to 400°F (200°C). 
- Place the Beef Wellington on a baking sheet. Bake for 20-25 minutes for medium-rare, or until the pastry is golden brown. 
- Let rest for 10 minutes before slicing. 
