INGREDIENTS
4 1/2
to 5 pound beef tenderloin ((about 18-inches in length))
4 tbsp
olive oil (, divided)
Kosher salt
coarsely cracked pepper
2 tbsp
unsalted butter
1/4 cup
chopped shallots
1/2 cup
Cognac (, plus 1-1/2 teaspoons)
3 cups
heavy cream
2 1/2 tbsp
Dijon mustard
1 tsp
chopped thyme leaves
1/4 cup
grated Parmigiano Reggiano
Kosher salt and cracked black pepper (, to taste)