- 1.5 lb (680 g) pork tenderloin - 2 tbsp (30 g) unsalted butter - 1 tbsp (15 ml) olive oil - 8 oz (225 g) cremini or button mushrooms, sliced - 1 small shallot (about 1 oz / 30 g), finely diced - 1/2 cup (120 ml) dry white wine - 1 cup (240 ml) heavy cream - 1/2 cup (120 ml) chicken stock - 1 tsp (5 g) Dijon mustard - 1 tsp (5 g) kosher salt - 1/2 tsp (1 g) freshly ground black pepper - 2 tbsp (8 g) chopped fresh parsley - 1 tsp (5 ml) lemon juice (optional)
1. Trim and cut pork into 1-inch (2.5 cm) thick medallions; season both sides with salt and pepper. 2. Heat butter and olive oil in a large skillet over medium-high heat. Sear medallions 2–3 minutes per side until golden; transfer to a plate and tent with foil. 3. Reduce heat to medium, add shallot and sauté 1 minute, then add mushrooms and cook until browned, about 4–5 minutes. 4. Deglaze the pan with white wine, scraping up browned bits; simmer until wine is reduced by half. 5. Stir in chicken stock, heavy cream, and Dijon mustard; simmer gently until sauce thickens slightly, 3–5 minutes. 6. Return medallions to the skillet and simmer in the sauce 2–3 minutes until cooked through (internal temp 145°F / 63°C). 7. Finish with lemon juice (if using) and parsley, adjust seasoning, and serve medallions with sauce spooned over.
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