Roasted Cod with Tomato Cream Sauce

Name: Roasted Cod with Tomato Cream Sauce
Ingredients: 4 cod fillets (6 to 8 ounces each); kosher salt; Freshly ground black pepper; extra-virgin olive oil; 1 head of garlic, cut in half widthwise; 3 pt. cherry tomatoes, cut in half; 1/4 c. chopped onion; 1/2 c. dry white wine; 1/2 c. low-sodium chicken stock; 1 tbsp. tomato paste; 1/4 c. heavy cream; 1/4 c. chopped parsley