INGREDIENTS
1
trimmed beef tenderloin
4
Crimini mushrooms or button mushrooms
1/2 tsp
Rosemary, fresh
1
Egg, large
1/4 tsp
Black pepper, freshly ground
1 17.3 ounce package
Puff pastry dough, frozen
1
Sea salt
1 tbsp
Olive oil, extra virgin
1/3 cup
Boursin cheese