Ingredients

• 2 teaspoons extra-virgin olive oil plus 2 tablespoons, divided
• 1/2 cup finely chopped onion
• 3 tablespoons finely diced celery
• 2 tablespoons chopped fresh parsley
• 2 (6-ounce) cans unsalted boneless, skinless salmon, drained
• 1 large egg, lightly beaten
• 1 1/2 teaspoons dijon mustard
• 1/2 cup panko breadcrumbs, preferably whole-wheat
• 1/2 teaspoon ground pepper
• 1 lemon, cut into wedges for serving (optional)
• creamy dill sauce for serving (optional)