Salmon Burgers with Avocado and Honey Mustard

Ingredients

• 1 1/4 lbs boneless skinless salmon fillets , cut into 1-inch cubes
• 1/4 cup red onion , minced
• 1/4 cup fresh dill , finely chopped
• 1 tbsp honey
• 1 tsp prepared horseradish
• Kosher salt and freshly ground black pepper , to taste
• 2 tbsp extra-virgin olive oil
• 4 brioche rolls , toasted
• 4 leaves Boston lettuce
• 4 red onion slices , 1/4 inch thick
• 1 ripe Hass avocado , sliced
• 1 cup Honey Mustard Dipping Sauce (SJ5032HA)