July 19, 2026 · 5 min

Pecan-Crusted Salmon with Smoky Mustard, Mashed Potatoes &Amp; Roasted Brussels Sprouts

Dinner5 min2556 cal / serving

This pecan-crusted salmon is a showstopper that’s surprisingly simple to make. The salmon fillets are brushed with Dijon mustard, then topped with a buttery pecan and panko mixture that bakes into a golden, crunchy crust. While the salmon cooks, you’ll roast Brussels sprouts until caramelized and whip up creamy mashed potatoes.

Finish the dish with a drizzle of smoky mustard and a squeeze of fresh lemon. Every bite balances rich, nutty, tangy and smoky flavors-perfect for a weeknight dinner that feels special.

Recipe details

Dinner5 min2556 cal / serving2 servings

Nutrition per serving

Calories2556 kcalProtein41.9 gFat228.9 gCarbs88.1 gSugar20.4 gFiber6.2 gSodium1942 mg

Dietary labels

Gluten-free: noLactose-free: noDairy-free: no

Allergen check

Gluten / wheat: containsMilk / dairy: containsEgg: not detectedFish: containsShellfish: not detectedPeanut: not detectedTree nuts: containsSoy: not detectedSesame: not detectedMustard: containsCelery: 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

Sour Cream1.5 tablespoon Sour CreamView ingredient guide
Pecans0.5 ounce PecansView ingredient guide
Potatoes16 ounce PotatoesView ingredient guide
Brussels Sprouts8 ounce Brussels SproutsView ingredient guide
Smoky Mustard1 ounce Smoky MustardView ingredient guide
Lemon0.5 unit LemonView ingredient guide
Panko Breadcrumbs0.25 cup Panko BreadcrumbsView ingredient guide
Dijon Mustard2 teaspoon Dijon MustardView ingredient guide
Salmon10 ounce SalmonView ingredient guide
Saltteaspoon (tsp) SaltView ingredient guide
Cooking Oil3 teaspoon (tsp) Cooking OilView ingredient guide
Butter3 tablespoon (tbsp) ButterView ingredient guide
Black Pepperteaspoon (tsp) Black PepperView ingredient guide

Instructions

  1. Adjust rack to top position (top and middle positions for 4 servings) and preheat oven to 425°F. Wash and dry produce. Dice potatoes into ½-inch pieces. Trim and halve Brussels sprouts. Quarter lemon.
  2. Place potatoes in a medium pot with enough salted water to cover by 2 inches. Bring to a boil and cook until tender, 10-12 minutes. Reserve ½ cup potato cooking liquid, then drain; return potatoes to pot. Keep covered off heat until ready to mash in step 5.
  3. While potatoes cook, toss Brussels sprouts on a baking sheet with a drizzle of oil, salt and pepper. Roast on top rack for 10 minutes (you’ll add the salmon then). Meanwhile, place 2 TBSP butter (3 TBSP for 4 servings) in a medium microwave-safe bowl. Microwave until melted, 30-60 seconds. Let cool slightly, then stir in pecans, panko and a pinch of salt and pepper.
  4. Pat salmon dry with paper towels. Rub a drizzle of oil on skin sides; season all over with salt and pepper. Spread Dijon mustard on flesh sides of salmon; mound with panko mixture, pressing firmly to adhere. Once Brussels sprouts have roasted 10 minutes, remove baking sheet from oven and carefully push to one side. (For 4 servings, leave Brussels sprouts roasting; add salmon to a second sheet and roast on middle rack, swapping rack positions halfway through.) Place salmon, skin sides down, on opposite side of sheet. Roast on top rack until salmon is cooked through and Brussels sprouts are browned and tender, 8-10 minutes.
  5. Meanwhile, add sour cream and 1 TBSP butter (2 TBSP for 4 servings) to pot with potatoes. Mash until smooth and creamy, adding splashes of reserved potato cooking liquid as needed. Season to taste with salt and pepper.
  6. Divide Brussels sprouts, mashed potatoes and salmon between plates. Drizzle smoky mustard over salmon and serve with lemon wedges on the side.

Recipe Tips

For extra-crispy topping, press the pecan-panko mixture firmly onto the salmon.

If your Brussels sprouts are large, cut them into quarters instead of halves for even roasting.

Reserve more potato cooking liquid than you think you need-it’s key for creamy mashed potatoes.

FAQ

Can I use a different type of fish?

Yes, you can substitute salmon with another firm fish like trout or cod. Adjust cooking time as needed.

Can I make this recipe nut-free?

Omit the pecans and use extra panko breadcrumbs mixed with melted butter for a similar crunchy topping.

How do I store leftovers?

Store components separately in airtight containers in the refrigerator for up to 2 days. Reheat gently to avoid overcooking the salmon.

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