1/2 c. olive oil 1/2 c. soy sauce 1 tbsp. onion powder 1/2 tsp. pepper 2 cloves garlic, crushed 1/4 - 1/2 c. finely chopped onion 8 oz. sliced mushrooms
Wash fish and place in zip lock bag. Pour marinade over fish and move fish around so marinade covers and surrounds fish. Marinade in refrigerator for 1 to 4 hours. Spray glass casserole dish with cooking spray. Pour fish and marinade over sliced mushrooms in casserole. Bake in 350 degree oven until fish is flaky.