Grilled Salmon Burgers with Caper Mayonnaise

There’s something about the char of a good grill paired with tender, flaky salmon that makes a simple sandwich feel like a celebration. These Grilled Salmon Burgers with Caper Mayonnaise are bright, fresh, and perfect for a weekend cookout or a quick weeknight dinner. The star is the salmon patty — seasoned just enough to let the fish shine — and the caper mayonnaise brings a tangy, briny lift that complements the smoky edges from the grill.

Why you’ll love these salmon burgers

These sandwiches are fast to assemble, packed with protein, and don’t skimp on texture or flavor. They’re flaky yet firm enough to hold together on the grill, and the cool, lemony caper mayo is the perfect companion. I love serving them with a crisp green salad or some oven-roasted fries for a meal that feels both hearty and fresh.

Ingredients

Use cold, fresh salmon for the best results and measure ingredients carefully. All quantities are shown exactly as used in the recipe.

• 2 tablespoons capers, drained and finely chopped
• 1/2 cup mayonnaise
• 2 tablespoons fresh-squeezed lemon juice
• 1 tablespoon dill pickle relish
• salt and pepper to taste
• 1 pound fresh salmon, skin removed and finely chopped or gently pulsed in a food processor
• 1 large egg
• 1/2 cup panko breadcrumbs
• 2 tablespoons finely chopped fresh parsley
• 1 small shallot, finely minced (or 2 tablespoons finely minced red onion)
• 1/2 teaspoon garlic powder
• 1/2 teaspoon smoked paprika (optional)
• 2 tablespoons olive oil (for brushing the grill or pan)
• 4 burger buns, toasted
• Optional toppings: butter lettuce, tomato slices, thinly sliced red onion, extra lemon wedges

Equipment

• Mixing bowls
• Large bowl for the salmon mixture
• Measuring spoons and cups
• Grill or grill pan
• Spatula
• Optional: food processor to pulse the salmon

Prep and flavor notes

The trick to a great salmon burger is balancing moisture and binders so the patty holds together without becoming heavy. Panko breadcrumbs and a single egg provide structure while keeping the texture light. Finely chopping the salmon by hand or using short pulses in a food processor gives you a patty that flakes nicely but doesn’t turn into mush. If your salmon is particularly wet, gently pat it dry with paper towels before mixing.

Caper Mayonnaise (makes about 3/4 cup)

This tangy sauce is quick to make and can be prepared ahead of time to let the flavors marry. The following amounts are exact and should not be altered for the recipe’s balance.

• 2 tablespoons capers, drained and finely chopped
• 1/2 cup mayonnaise
• 2 tablespoons fresh-squeezed lemon juice
• 1 tablespoon dill pickle relish
• salt and pepper to taste

How to make the caper mayonnaise

1. Combine the mayonnaise, lemon juice, and dill pickle relish in a small bowl. Stir until smooth and well combined.
2. Add the chopped capers and mix them into the mayonnaise base so they are evenly distributed.
3. Taste the sauce and season with salt and pepper to your preference. Remember the capers add saltiness, so go easy on additional salt.
4. Cover and refrigerate the sauce for at least 15 minutes to let the flavors meld, or make it up to a day in advance.

Salmon Burger Directions — clear, step-by-step

Follow these steps in order to form and grill perfectly textured salmon burgers.

1. Prepare the salmon: If your salmon is not already finely chopped, remove any bones and skin, then use a sharp knife to finely chop the fillet into small pieces. Alternatively, pulse the salmon in a food processor in short bursts until it’s coarsely ground. Avoid over-processing — you want small chunks, not a paste.
2. Dry the salmon slightly: Spread the chopped salmon on a layer of paper towels and gently press with another towel to remove excess moisture. This helps the patties hold together.
3. Combine dry and flavoring ingredients: In a large bowl, add the panko breadcrumbs, minced shallot (or red onion), chopped parsley, garlic powder, smoked paprika (if using), and a generous pinch of salt and some freshly cracked pepper. Stir to distribute the seasonings evenly.
4. Add egg and salmon: Crack the egg into the bowl with the dry mixture, then add the chopped salmon. Using a spatula or clean hands, gently fold the mixture until just combined. Do not overwork; stop once the mixture holds together when pressed. If it feels too wet, add up to 1 tablespoon more panko; if it feels too dry, add a teaspoon of water or a tiny bit more mayonnaise.
5. Form the patties: Divide the mixture into four equal portions. With lightly wet or oiled hands, shape each portion into a compact patty about 3/4-inch thick. Press a slight indentation in the center of each patty with your thumb — this helps them cook evenly and prevents doming.
6. Chill briefly (optional): For firmer patties that hold their shape, place the formed burgers on a tray and refrigerate for 15–20 minutes. This is especially useful if you’re grilling and want less breakage when turning.
7. Preheat the grill or grill pan: Heat your grill to medium-high or place a grill pan over medium-high heat on the stovetop. Brush the grill grates or pan lightly with olive oil to prevent sticking.
8. Cook the patties: Brush the top of each patty lightly with olive oil. Place the patties on the hot grill or grill pan, oiled side down. Grill for about 4–5 minutes per side, flipping once, until the exterior is nicely seared and the internal temperature reaches 145°F (63°C). The burgers should be opaque and just flaky in the center. Avoid overcooking to keep them moist.
9. Rest the burgers: Remove the patties from the heat and let them rest on a plate for 3 minutes. Resting allows juices to redistribute and keeps the texture tender.
10. Assemble the burgers: Lightly toast the burger buns on the grill for 30–60 seconds if desired. Spread a generous spoonful of the caper mayonnaise on the bottom bun, place a salmon patty on top, then add lettuce, tomato, red onion, and another dollop of caper mayo before capping with the top bun.

Serving suggestions

These salmon burgers pair beautifully with crisp sides. Try oven-baked sweet potato fries, a crunchy cabbage slaw, or a simple cucumber and tomato salad with a lemon vinaigrette. For a lighter plate, serve the patty without a bun over greens and add extra caper mayonnaise as a dressing.

Make-ahead and storage

You can prepare the caper mayonnaise up to 24 hours in advance and keep it refrigerated in an airtight container. Patty mixture may be formed and refrigerated for up to 24 hours before grilling; store the patties covered. Cooked salmon burgers will keep in the refrigerator for up to 3 days in an airtight container and can be reheated gently in a skillet over low heat to preserve moisture.

Troubleshooting

• Patty falls apart: The mixture was either too wet or not bound enough. Gently press in another tablespoon of panko breadcrumbs and chill the formed patties for 15–20 minutes before cooking.
• Bread sticks to the grill: Make sure the grill or pan is well-oiled and preheated. Use a thin spatula and allow a nice sear to form before flipping.
• Overcooked, dry burgers: Reduce cooking time slightly and remove from heat when just opaque and flaky. Resting for a few minutes helps maintain juiciness.

Flavor variations

If you want to switch up the flavor profile, here are a few easy tweaks:
– Add a teaspoon of Dijon mustard to the patty mix for extra depth.
– Fold in 2 tablespoons of finely diced roasted red pepper for a sweeter note.
– Swap parsley for dill for a brighter, herby finish.
– For a spicier sauce, stir a teaspoon of harissa or sriracha into the caper mayonnaise.

Final thoughts

These Grilled Salmon Burgers with Caper Mayonnaise are a reliable, flavorful option that hits every note: smoky from the grill, tender from the salmon, and bright and tangy from the caper mayonnaise. They’re approachable enough for a casual weeknight and special enough for guests. Give the caper mayo time to rest for the best flavor, and don’t be afraid to make small adjustments to suit your taste — a squeeze of extra lemon, a handful of fresh herbs, or a light toast on the bun can elevate the sandwich in simple ways.

Enjoy building these burgers, and savor that first bite of warm, grilled salmon with the cool, zesty kick of capers and lemon. They’re one of those recipes that feels effortless and memorable all at once.