In a 7- to 8-quart wide-bottomed oven-safe saucepot on medium-high, cook onion, peppers, and 1/4 teaspoon salt in olive oil for 5 minutes or until onions are almost tender, stirring occasionally.
STEP 2
Add tomatoes and thyme; cook 2 minutes. Add cod fillets and water; sprinkle cod with 1/4 teaspoon each salt and pepper. Cover and bake at 450 degrees F for 15 minutes or until cod is cooked. Discard thyme sprigs. Serve with whole-grain rolls.