Preheat oven to 400 degrees. Line a baking sheet with foil for easy cleanup. Place salmon filet on baking sheet, season with salt and pepper, brush with 1 tablespoon olive oil. Bake for 15-20 minutes until cooked through. Allow to cool, then flake with a fork. Remove any bones or skin you find.: You will notice a gentle roasting aroma as the oven warms, and the surface of the salmon will go from glossy to opaque when it is done, signaling perfect flakiness. When you brush with that first tablespoon of olive oil , it helps the seasoning adhere and promotes even browning, which adds visual appeal and slight caramelization. As it bakes you might hear a faint pop from rendered fats, and the fish should lift easily from the foil once cooked. Letting it cool is important because warm flakes can make the mixture too loose; cooling firms up the flesh so you can handle and flake it without steaming the other ingredients. A common mistake here is undercooking the salmon , which leaves a raw center and makes the patties unstable, or overcooking so it becomes dry. To avoid this, check at 15 minutes and aim for an internal flake rather than a tough texture.
Heat a skillet over medium heat, add 1 tablespoon olive oil and one tablespoon butter. Saute the onion and bell pepper until soft and golden, about 10 minutes. Remove from heat.: As the skillet warms, the butter will foam and give off a toasty, nutty scent that foreshadows the rich flavor it will impart to the aromatics. When the onion and red bell pepper begin to sizzle, stir them so the edges take on golden spots; that caramelization builds sweetness and complexity. You should be able to smell the sweetness deepen and see the pieces soften and become translucent, a visual cue that the aromatic base is ready. Removing them from heat prevents them from turning bitter, which can happen if they scorch. One frequent oversight is cooking too hot; if you hear loud popping and see dark browning too quickly, the vegetables are burning instead of sweetening, so lower the heat and be patient for the best flavor.
In a large bowl, combine the flaked salmon, onion and bell pepper, eggs, panko breadcrumbs, mayo, worcestershire sauce, sriracha and old bay seasoning. Mix until combined.: When you fold these components together, you will feel the mixture change from loose flakes into a cohesive mass thanks to the eggs and mayo . The Panko bread crumbs absorb moisture and give structure while preserving airiness. Smelling the bowl at this stage should reveal a layered profile, salt and spice beneath the sweet aromatics. Mixing evenly is crucial for consistent seasoning and texture, so use a gentle hand to avoid mashing the flakes apart. A common misstep is overworking the mixture which results in dense patties, so stop when the components are uniformly combined.
Wipe out the skillet and heat over medium high heat. Add 1 more tablespoon each of olive oil and butter. Form the salmon mixture into patties, about 1 and 1/2 tablespoons in size.: The clean skillet ensures a perfect sear without burnt bits. The sizzle you hear when the patties hit the hot fat is the best indicator that the crust will form; it should be a steady, confident sound, not a violent splatter. Using a scoop or spoon helps keep the size consistent, so each patty cooks evenly. You should feel a light tack from the Panko bread crumbs , and the formed patties should hold their shape without falling apart. If they feel too wet, let the mixture rest briefly so the crumbs can absorb excess moisture. A frequent error is forming patties that are too thin, which makes them dry out during cooking; aim for a compact, slightly thick shape.
Cook the patties in the skillet 3-4 minutes, until golden and crispy, then flip and repeat. Cook in batches, do not overcrowd the pan. Repeat until all of the patties are cooked.: As they cook you will see the edges turn a warm golden brown and smell a rich, toasty fragrance from the butter and Panko bread crumbs . The first side should release easily from the pan when it has developed its crust, which is the moment to flip for an even finish. Cooking in batches preserves pan temperature so each batch gets the same sizzling treatment; overcrowding drops the heat and leads to steaming instead of searing. Listen for a crisp, steady sizzle rather than a soft simmer which means the crust is forming properly. A common trap is flipping too often; resist the urge and let the patties develop that deep color before turning, otherwise you will not get the ideal texture contrast.