Copycat LongHorn Steakhouse Parmesan Crusted Salmon Recipe – Crispy, Creamy, and Restaurant-Style

If you love LongHorn Steakhouse’s Parmesan Crusted Salmon, this at-home version brings the same flavors with a simple, approachable method. You’ll get flaky salmon topped with a creamy, garlicky Parmesan crust that turns golden and crisp under the broiler. The best part is you can make it in under 30 minutes with ingredients you probably already have.

It’s a great choice for a weeknight dinner, but impressive enough for guests. Serve it with mashed potatoes, rice, or a light salad, and you’re set.

What Makes This Special

This recipe nails the balance of textures: tender, juicy salmon under a crunchy, cheesy crust. The topping blends mayonnaise, Parmesan, and seasonings for a savory layer that sticks beautifully and browns fast.

A quick panko finish adds that restaurant-style crunch you crave. You don’t need fancy tools—just a skillet and your oven broiler. It’s a low-effort, high-reward dish with reliable, repeatable results.

What You’ll Need

• Salmon: 4 skin-on fillets (about 6 ounces each), pin bones removed
• Olive oil: 2 tablespoons, for searing
• Salt and black pepper: To season
• Lemon: 1, for zest and wedges
• Garlic: 2 cloves, finely minced (or 1/2 teaspoon garlic powder)
• Mayonnaise: 1/3 cup (this helps the crust stick and stay creamy)
• Sour cream or Greek yogurt: 2 tablespoons (adds tang)
• Dijon mustard: 1 teaspoon
• Grated Parmesan cheese: 1/2 cup, finely grated (plus extra for topping)
• Italian seasoning: 1 teaspoon (or a mix of dried basil, oregano, and parsley)
• Panko breadcrumbs: 1/3 cup
• Butter: 1 tablespoon, melted
• Fresh parsley: 1 tablespoon, chopped (optional, for garnish)

Instructions

1. Preheat and prep: Set your oven to broil on high and move an oven rack to the upper-middle position. Pat salmon dry with paper towels. Season both sides with salt and pepper.
2. Make the Parmesan spread: In a bowl, mix mayonnaise, sour cream (or Greek yogurt), Dijon, minced garlic, lemon zest (about 1/2 teaspoon), Parmesan, and Italian seasoning. Stir until smooth. Taste and adjust salt and pepper.
3. Toast the panko: Combine panko with melted butter and a pinch of salt. Stir until the crumbs are lightly coated. This helps them brown fast and stay crisp.
4. Sear the salmon: Heat olive oil in an oven-safe skillet over medium-high.Place salmon skin-side down and sear for 3–4 minutes, until the skin is crisp and the flesh looks mostly opaque around the edges. Turn off the heat.
5. Add the topping: Spread a generous layer of the Parmesan mixture over the top of each fillet. Sprinkle with the buttered panko and a little extra Parmesan for a deeper crust.
6. Broil to finish: Place the skillet under the broiler for 2–4 minutes, watching closely.Pull it when the crust is golden and bubbly and the salmon flakes easily with a fork. If your broiler runs hot, check at 2 minutes.
7. Rest and serve: Let the salmon rest 2 minutes. Squeeze fresh lemon over the top and garnish with parsley. Serve with your favorite sides.

How to Store

Leftovers keep well. Store cooked salmon in an airtight container in the fridge for up to 3 days. Reheat gently in a 300°F (150°C) oven for 8–10 minutes to warm through without drying it out.

If you want to keep the crust crisp, skip the microwave or use it in short bursts at 50% power.

For longer storage, you can freeze cooked salmon for up to 2 months. Wrap tightly and thaw overnight in the fridge before reheating. Note: the crust won’t be quite as crunchy after freezing, but the flavor stays great.

Why This is Good for You

• Omega-3s: Salmon is rich in heart-healthy fats that support brain and joint health.
• Protein power: Each serving delivers a satisfying amount of protein to keep you full.
• Calcium and flavor: Parmesan adds calcium and umami without needing a heavy sauce.
• Smart swaps: Using Greek yogurt for part of the mayo lightens the dish while keeping it creamy.

Common Mistakes to Avoid

• Skipping the pat-dry step: Wet salmon won’t sear well. Dry fish equals crisp skin and better browning.
• Overcooking: Salmon is best when it’s just opaque and flakes easily. Pull it when it hits about 125–130°F in the thickest part for medium.
• Broiling too long: The crust browns fast. Keep the oven door slightly ajar and watch it like a hawk.
• Using pre-shredded Parmesan only: Finely grated cheese melts and binds better.If using pre-shredded, mix in some finely grated for a smoother crust.
• Forgetting acid: A squeeze of lemon brightens the rich topping and lifts the whole dish.

Variations You Can Try

• Herb swap: Use fresh dill, chives, or basil in place of Italian seasoning for a brighter flavor.
• Spicy kick: Add 1/4–1/2 teaspoon crushed red pepper flakes or a dash of hot sauce to the spread.
• Garlic butter panko: Sauté panko in 1 tablespoon butter with 1 minced garlic clove before topping.
• Lighter version: Use all Greek yogurt instead of mayo and reduce Parmesan by a couple of tablespoons.
• Air fryer method: Air fry salmon at 390°F for 6–8 minutes, add topping, then air fry 2–3 more minutes until browned.
• No-skillet option: Bake salmon at 400°F for 8–10 minutes, top with the spread and panko, then broil 1–2 minutes.

FAQ

Can I use skinless salmon?

Yes. Skin adds protection and flavor, but skinless works fine. Just grease your pan or use parchment to prevent sticking, and monitor the cook time since it may go faster.

What kind of Parmesan should I use?

Use finely grated Parmesan for the spread so it blends smoothly.

You can sprinkle a little shredded Parmesan on top with the panko for extra texture.

How do I know when the salmon is done?

The flesh should turn opaque and flake easily with a fork. For the most accurate result, use an instant-read thermometer and pull it at 125–130°F for medium.

Can I make the topping ahead?

Yes. Mix the Parmesan spread up to 2 days in advance and keep it in the fridge.

For the best crunch, wait to combine the panko with butter until just before broiling.

What sides go well with this?

Great pairings include garlic mashed potatoes, rice pilaf, roasted asparagus, green beans, a crisp Caesar salad, or lemony couscous. Keep sides simple to let the salmon shine.

Can I use another fish?

Absolutely. This topping works with trout, cod, halibut, or tilapia.

Adjust cook time based on thickness, since lean white fish cooks faster.

Is there a gluten-free option?

Yes. Use gluten-free panko or skip the breadcrumbs altogether and rely on the Parmesan layer. It still browns nicely under the broiler.

What if I don’t have a broiler-safe skillet?

Transfer the seared salmon to a foil-lined sheet pan before broiling.

Or bake the salmon on a sheet pan from the start and broil to finish.

Final Thoughts

This Copycat LongHorn Steakhouse Parmesan Crusted Salmon delivers restaurant flavor with an easy, weeknight-friendly method. The creamy Parmesan layer and crisp panko crust make every bite rich and satisfying without being heavy. Keep a close eye while broiling, finish with lemon, and you’ll have a crowd-pleasing main that feels special any night of the week.

Enjoy it fresh, and don’t be surprised when it becomes a regular in your rotation.