How To make Crimini Shingled Mahi Mahi w/Garlic Mashed Potatoes

6 Plum Tomatoes
4 Tbsp Olive Oil
7 Cloves Garlic

peeled
1 Sprig Fresh Basil
2 Sprigs Thyme
1 Sprig Fresh Rosemary
:

<For The Potatoes> 1 1/4 Lb Russet Potatoes

peeled
1 C Heavy Cream
2 tbsp Olive Oil
Salt And Pepper To Season :

<For The Fish> 4 7 Oz. Mahi Mahi Fillets
8 Crimini Mushrooms
Salt And Pepper -- to taste 2 tbsp Olive Oil
TO ROAST TOMATOES:
Cut a cross into the top of tomatoes and blanch in boiling water for 5 seconds. Drop into ice water to stop cooking. Peel, quarter and seed tomatoes. In a saucepan, combine olive oil, fresh herbs, garlic cloves and tomatoes. Cover and slowly roast in a preheated oven at 200