Preparation / Directions:
Preheat oven to 400 degrees F. In a frying pan over medium heat, melt butter; add mushrooms and cook just until limp; then stir in tomatoes and garlic; heat through. Season to taste with salt and pepper. Wipe fish with damp cloth; cut into serving-size pieces (about 3 by 5 inches), if desired. Arrange pieces in single layer, without crowding, in greased large, shallow baking pan. Sprinkle lightly with salt and pepper and spoon mushroom mixture evenly over fish; arrange shrimp evenly over fish. Bake, uncovered, checking for change in translucency or until fish flakes readily when prodded in thickest portion with a fork and shrimp are pink. For a 1-inch thick piece of fish (measured in thickest portion), allow 10 minutes. Remove fish from oven; transfer to a warm serving platter, along with vegetable mixture (discard pan juices). To serve, tilt platter slightly and spoon off juices that have accumulated; discard. Garnish platter with tomato wedges, olives, parsley, lemon.