Duxelles:
- 1 lb cremini mushrooms, very finely chopped
- 2 (30 ml) Tbsp olive oil
- 2 shallots finely chopped
- Kosher salt and pepper to taste
- 1 Tbsp unsalted butter
- 3 cloves garlic finely chopped
Filling:
- 2.5 lb eye of round for beef
- 2 Tbsp vegetable oil
- 2 Tbsp unsalted butter
- ¼ cup dijon mustard
- Salt and pepper to taste
- 4-6 slices ham or mortadella
- Half of duxelle mixture
- 1 box puff pastry or 1 recipe of my homemade puff pastry
- Brush with egg yolk and a splash of water
- Flakey salt
Pork Filling Variation:
- 1.5 lb pork tenderloin
- 2 Tbsp vegetable oil
- Kosher salt and pepper to taste
- 4 Tbsp unsalted butter, divided in half (half for basting, half for apples)
- ¼ cup dijon mustard
- 1 Granny Smith apple, peeled and grated
- 2 tsp honey
- ¼ cup white wine
- ⅓ cup duxelles
- 4 slices mortadella
- 1 box puff pastry or 1 recipe of my homemade puff pastry