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Creamy Pork Tenderloin

Creamy pork tenderloin with a silky mushroom cream sauce—golden seared medallions finished in a hot oven to 145°F. Then the skillet becomes a quick pan sauce: mushrooms cooked until golden, deglazed with white wine, and thickened with heavy cream, Dijon, and parmesan.
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Prep Time 10 minutes
Cook Time 30 minutes
rest 5 minutes
Total Time 45 minutes
Servings: 4 servings
Course: Main Dish
Cuisine: American
Calories: 720
Ingredients Equipment Method Notes

Ingredients
  

Pork tenderloin
  • 2 pork tenderloins About 1 lb each.
  • 0.5 tsp salt To taste (use less if your parmesan is salty).
  • 0.5 tsp pepper To taste.
  • 2 tbsp olive oil
  • 2 tbsp butter
Creamy mushroom sauce
  • 8 oz cremini mushrooms Sliced.
  • 4 garlic Cloves, minced.
  • 0.5 cup dry white wine
  • 1 cup heavy cream
  • 1 tsp Dijon mustard
  • 1 tsp fresh thyme Leaves (minced if needed).
  • 0.25 cup parmesan Grated.
  • 1 fresh parsley For garnish.

Equipment

  • 1 cast iron skillet

Method
 

Season and sear the tenderloins
  1. Season the tenderloins with salt and pepper. Keep the seasoning even so the surface browns uniformly.
  2. Heat olive oil in a cast iron skillet over medium-high heat, then sear tenderloins 2–3 minutes per side until golden all over. Transfer the browned tenderloins to a 400°F oven and roast 15–18 minutes until 145°F internally.
Rest, slice, and build the sauce
  1. Rest the tenderloins for 5 minutes, then slice into medallions. This helps the juices redistribute for a tender texture.
  2. In the same skillet, melt butter and cook mushrooms for 5 minutes until golden. Add garlic and fresh thyme, then cook 30 seconds until fragrant.
  3. Deglaze with white wine, simmer for 2 minutes, then stir in heavy cream, Dijon mustard, and parmesan until thickened. Keep stirring until the sauce is silky and coats the back of a spoon.
Serve
  1. Serve the medallion pork over the creamy mushroom sauce and garnish with fresh parsley. Spoon extra sauce over the top for an even, herb-flecked finish.

Notes

Pro tip: if the sauce looks thinner at first, keep it simmering and stirring until it coats the spoon—parmesan also thickens as it warms. Store leftovers covered in the refrigerator for up to 3 days; reheat gently in a skillet over low heat with a splash of cream or wine to loosen. Freezing is not recommended because the cream sauce can separate after thawing. For a dairy-light swap, use half-and-half instead of heavy cream and reduce the simmer time slightly to prevent thinning.