Add salmon, mustard, shallots, capers, peppers, dill, onion powder, garlic powder, salt, and black pepper into a food processor or blender. Pulse and scrape down the sides until the salmon is coarsely ground. Transfer the mixture into a medium sized bowl and add the egg and breadcrumb. Once mixed, evenly divide mixture into 4 patties about 1/2 inch thick. Place on baking sheet and bake in preheated 350 degrees oven for 20-25 minutes. Patties must feel firm and have a slightly brown color. Serve hot.
Combine all ingredients together in a small bowl. Cover and refrigerate until ready to serve.