Broiled Sour Cream & Dill Salmon

Ingredients

• 1 English cucumber, halved crosswise
• ½ small white onion, thinly sliced into rings
• 1 tbsp red wine vinegar
• 5 tsp extra virgin olive oil
• ½ tsp kosher salt
• ¼ tsp ground black pepper
• 4 boneless salmon fillets (about 1½ pounds)
• ¼ cup fresh lemon juice
• 1 tsp lemon pepper seasoning
• ½ tsp garlic powder
• ½ tsp onion salt
• ¼ cup light sour cream
• ½ tsp chopped fresh dill plus sprigs for garnish
• Lemon slices for garnish