Microwave Mediterranean Cod
["1 small onion", "1 garlic clove, minced", "1 Tbsp. salad oil", "1 medium zucchini", "1 (8 1/4 oz.) can tomatoes", "1/4 lb. sliced mushrooms", "2 Tbsp. tomato paste", "1/2 c. pitted olives, cut in half", "2 (6 oz.) cod or halibut steaks", "1/4 tsp. oregano", "parsley sprigs for garnish"]
["In 1 1/2 quart casserole, cook onion, garlic and oil on High, covered, 4 to 4 1/2 minutes in microwave.", "Cut zucchini lengthwise in half, then crosswise in 1/4 inch slices.", "Add onion mixture with next 3 ingredients.", "Cook covered on High 10 minutes.", "Stir once.", "Add olives; cover and cook 5 to 7 minutes, until tender. Sprinkle fish steaks with oregano.", "Moisten 2 paper towels; place fish steak on each towel.", "Twist corners together.", "Cook on High 2 1/2 minutes, just until outer edges of fish are opaque.", "Serve sauce and fish on plate with garnish.", "Makes 2 main dishes."]
["onion", "garlic", "salad oil", "zucchini", "tomatoes", "mushrooms", "tomato paste", "olives", "oregano", "parsley sprigs"]