Start by preparing the salmon: remove the skin and dice it into small pieces.
In a mixing bowl, combine the diced salmon, breadcrumbs, chopped onion, and parsley.
Add the beaten egg and Dijon mustard to the mixture.
Season with salt and pepper, mixing everything until well combined.
Form the mixture into patties, about 3/4 inch thick.
Heat a skillet or grill over medium-high heat and lightly oil it.
Cook the patties for about 5-7 minutes on each side or until golden brown.
While the patties cook, prepare your burger buns and toppings.
Assemble the burgers with the cooked patties, lettuce, tomato, and any other desired toppings.
Serve immediately and enjoy!