Place salmon on baking sheet and brush with olive oil and season with salt and pepper.
Place salmon in the oven and roast for 15-20 minutes, until cooked through.
Remove from oven and let cool completely.
Once cooled, flake the chilled salmon into a large bowl. Add all the remaining ingredients and stir gently just until combined. Using wet hands, shape salmon mixture into 6 equal balls. Gently flatten balls to form 6 patties.
Heat 2 tablespoons butter or olive oil in a large saute pan over medium heat. In batches, add the salmon cakes and fry for 3 to 4 minutes on each side, until browned. Drain on paper towels.
Serve on top of romaine leaves with lemon wedges.
Recipe by Three Hungry Boys at https://www.threehungryboys.com/2021/07/26/salmon-patties/