Ingredients
Instructions
- Preheat oven to 375°F.
- Butter one oven-safe dish large enough for the two tenderloins.
- Fry the onion rings in some butter until soft and golden; set aside.
- Fry the mushrooms in vegetable oil until well-browned; set aside.
- Cut the tenderloins into two pieces each; add pepper and salt to taste.
- Slather each piece with lots of mustard and brown quickly in hot butter. Don't worry if the mustard sticks to the pan!
- Transfer the tenderloins to the oven dish, then deglaze the pan with the cream; pour the cream over the tenderloins. Divide the fried onions and mushrooms over the tops of the tenderloins.
- Cover with foil and bake in oven for 30 minutes. Cut into tenderloins to see if they are done, they should be just beyond pink in the center.