Roasted Cod With Mushrooms And Vegetables Recipe

• 12 ounce mushrooms, any variety
• 1/4 c. extra virgin olive oil
• 2 tsp minced fresh rosemary leaves or possibly 1 scant tsp. dry
• 1 1/4 tsp salt
• 1 tsp grnd black pepper
• 1 1/2 lb red-skinned potatoes, sliced
• 1 lrg onion, sliced
• 5 med cloves garlic, minced
• 1 1/4 lb cod or possibly other hard-fleshed white fish

Directions