Broiled Greek Fish Fillets

8 tilapia fillets
1/4 tsp. sea-salt
1/4 tsp. pepper
1/4 c. fat free plain yogurt
3 Tbsp. butter, softened
1 Tbsp. lime juice
1 samll red onion, finely chopped
1/2 c. pitted Greek olives
1 tsp. dill weed
1/2 tsp. paprika
1/4 tsp. garlic powder
1/2 c. crumbled feta cheese

Sprinkle tilapia with salt and pepper. Place on a broiler pan coated with cooking spray. In a small bowl, combine the yogurt, butter and lime juice. Stir in the onion, olives and seasonings. Spread down the middle of each fillet; sprinkle with feta cheese. Broil 3-4 inches from the heat for 6-9 minutes or until fish flakes easily with a fork.