June 21, 2026 · 15 min

Pan-Seared Beef Tenderloin with Peppercorn Sauce, Maple-Sage Mashed Sweet Potatoes and Lemon Roasted Asparagus

Side Dish15 min1098 cal / serving

Treat yourself to a luxurious meal that’s surprisingly simple to prepare at home. This recipe features tender beef tenderloin filets, seared to perfection and topped with a rich, creamy peppercorn sauce. The classic au poivre sauce is made with freshly crushed black peppercorns, beef stock and crème fraîche for a velvety finish.

On the side, enjoy fluffy mashed sweet potatoes infused with sage and a touch of maple syrup, plus bright roasted asparagus with a squeeze of lemon. Every element comes together for a balanced, impressive plate that’s sure to wow your guests.


Recipe details

Side Dish15 min1098 cal / serving2 servings

Nutrition per serving

Calories1098 kcalProtein49.7 gFat68.1 gCarbs69.1 gSugar28.2 gFiber3.2 gSodium1334 mg

Dietary labels

Gluten-free: yesLactose-free: noDairy-free: no

Allergen check

Gluten / wheat: not detectedMilk / dairy: containsEgg: not detectedFish: not detectedShellfish: not detectedPeanut: not detectedTree nuts: not detectedSoy: not detectedSesame: not detectedMustard: not detectedCelery: not detectedSulphites: not detectedLupin: not detectedMolluscs: not detected

Values are calculated per serving from ingredient amounts and the ingredient nutrition reference per 100g. Allergen and diet labels use available ingredient metadata and name matching; always check product labels for strict diets or allergies. Some ingredient amounts or nutrition values were incomplete, so this is marked as a partial estimate.


Ingredients

Sweet Potatoes2 unit Sweet PotatoesView ingredient guide
Asparagus6 ounce AsparagusView ingredient guide
Sage0.25 ounce SageView ingredient guide
Lemon1 unit LemonView ingredient guide
Crème Fraîche4 tablespoon Crème FraîcheView ingredient guide
Maple Syrup2 tablespoon Maple SyrupView ingredient guide
Garlic Powder1 teaspoon Garlic PowderView ingredient guide
Cooking Oil1 tablespoon Cooking OilView ingredient guide
Butter3 tablespoon ButterView ingredient guide
SaltSaltView ingredient guide
PepperPepperView ingredient guide

Instructions

  1. Adjust rack to top position and preheat oven to 425°F. Wash and dry produce. Peel sweet potatoes and dice into ½-inch pieces. Place sweet potatoes in a medium pot with enough salted water to cover by 2 inches. Bring to a boil and cook until tender when pierced with a fork, 15-20 minutes. (Cover pot with lid to speed boiling.) Drain sweet potatoes and return to pot; cover to keep warm.
  2. While sweet potatoes cook, place 2 tablespoons butter (4 tablespoons for 4 servings) in a small bowl to soften. Place peppercorns in a zip-close bag and crush with a rolling pin or heavy pan. Trim and discard bottom 1 inch from asparagus. Pick sage leaves from stems and finely chop until you have 1 tablespoon (2 tablespoons for 4). Quarter lemon.
  3. Toss asparagus on a baking sheet with a drizzle of oil, salt and pepper. Roast on top rack until browned and tender, 10-12 minutes.
  4. Pat beef dry with paper towels; season all over with salt and pepper. Heat a drizzle of oil in a large pan over medium-high heat. Add beef and cook to desired doneness, 4-7 minutes per side. Turn off heat; transfer beef to a cutting board to rest for at least 5 minutes. Wipe out any burned bits from pan.
  5. While beef rests, heat a drizzle of oil in the same pan over medium-low heat. Add ½ teaspoon crushed peppercorns (1 teaspoon for 4 servings). Cook, stirring, until fragrant, about 30 seconds. Stir in ¼ cup water (⅓ cup for 4) and stock concentrate. Simmer until sauce thickens enough to coat the back of a spoon, 1-3 minutes. Remove from heat; stir in half the crème fraîche and 1 tablespoon butter (2 tablespoons for 4) until melted and combined. Cover to keep warm. If sauce is too thick, add a splash of water.
  6. To the bowl with softened butter, add half the maple syrup (all for 4 servings), half the garlic powder, 1 teaspoon chopped sage (2 teaspoons for 4), salt and pepper. Stir with a fork to combine. (If butter is too firm, microwave for 10-15 seconds.) To the pot with sweet potatoes, add half the maple-sage butter (reserve the rest for serving), remaining crème fraîche, remaining chopped sage and remaining garlic powder. Mash with a potato masher or fork until smooth and creamy. Season with salt and pepper.
  7. If asparagus has cooled, reheat in oven for 2-3 minutes. Slice beef against the grain. Divide beef, sweet potatoes and asparagus between plates. Spoon sauce over beef. Top sweet potatoes with reserved maple-sage butter. Squeeze lemon juice over asparagus and serve with remaining lemon wedges on the side. (Beef is fully cooked when internal temperature reaches 145°F.)

Recipe Tips

For the best flavor, use freshly crushed peppercorns rather than pre-ground pepper.

Let the beef rest after cooking to keep it juicy; slice against the grain for maximum tenderness.

If your maple-sage butter is too firm, microwave it briefly to soften before mashing into the sweet potatoes.

FAQ

Can I substitute the beef tenderloin with another cut?

Yes, you can use ribeye or sirloin steak, but adjust cooking time accordingly as tenderness and thickness may vary.

What can I use instead of crème fraîche?

Heavy cream or sour cream can be substituted, though the sauce will be slightly less tangy.

How do I crush the peppercorns without a rolling pin?

Use the bottom of a heavy skillet or a mortar and pestle. Place them in a bag and press firmly.

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