Pork Tenderloin Diablo: A 40-Minute Mustard-Horseradish Dinner

This article was compiled by the editorial desk, drawing on the original recipe and its stated nutritional information.

A 40-minute pork tenderloin dish, dubbed “diablo” for its spicy kick, combines the classic pairing of pork and mustard with the sharp heat of horseradish and cayenne. The result is a balanced main course where a creamy, buttery sauce tempers the fire, making it a practical choice for a weeknight dinner that doesn't skimp on flavor.

The recipe, which serves three, calls for a single pound of pork tenderloin. Preparation is straightforward: season the meat with salt and pepper, then sear it in an ovenproof skillet with vegetable oil over high heat until browned on one side, about 3 to 4 minutes. After flipping, the skillet goes into a preheated 375°F (190°C) oven for 20 to 25 minutes, until the pork is browned and still slightly pink in the center. An instant-read thermometer should register at least 145°F (63°C) for safe consumption.

While the pork rests, the sauce comes together in the same skillet. After discarding excess oil, chicken broth is added and brought to a boil, with any browned bits scraped from the bottom to build flavor. Heavy cream, extra-hot prepared horseradish, Dijon mustard, and a quarter-teaspoon of cayenne pepper are whisked in, and the mixture is simmered until it thickens into a rich sauce, about 3 to 4 minutes. Off the heat, a tablespoon of cold unsalted butter is whisked in for a silky finish, along with chopped fresh chives.

Why This Sauce Works

The sauce is a study in contrasts: the sharpness of horseradish and the tang of Dijon are mellowed by the cream and butter, while the cayenne adds a subtle, lingering warmth. This balance is key to the dish's appeal, allowing the pork's natural flavor to shine without being overwhelmed. The technique of deglazing the pan with broth ensures that every bit of caramelized flavor from the searing step is captured in the final sauce.

Once the pork is rested, it's sliced into half-inch medallions and topped with the sauce. The dish is then ready to serve, with each portion containing approximately 235 calories, 14 grams of fat, 2 grams of carbohydrates, and 24 grams of protein, according to the recipe's nutritional breakdown.

This recipe is a testament to how a few pantry staples—mustard, horseradish, cayenne, and cream—can transform a simple pork tenderloin into a memorable meal. It's a practical option for cooks seeking a dish that feels indulgent but fits neatly into a balanced diet.