1. Set broiler to high. Broil salmon, turning once, until it reaches a minimum internal temperature of 145 degrees F ( 4-5 minutes per side). Once salmon is cool, peel off skin (if applicable) and discard.
2. Heat 1 tablespoon oil in skillet over medium heat. Add onion and pepper and saute until soft ( 5-8 minutes). Add garlic and saute until fragrant (30 seconds). Remove pan from heat and let cool.
3. Flake salmon into small pieces. Gently stir in remaining ingredients except oil. Using 1/4 cup measure, shape mixture into patties.
4. Heat remaining 2 tablespoons oil in skillet over medium-high heat. Add salmon cakes and cook, turning once, until golden brown and warmed through (3-5 minutes per side).