When you cook something with spinach as a primary ingredient, you are creating a Florentine dish. In other words, when baking cod with spinach, the result is cod Florentine. Cod is a delicate fish, so spinach complements its flavor. The only two major requirements for making cod Florentine are cod fillets and spinach. Beyond that, you can create a distinctive sauce that will further enhance the taste of both the of the key ingredients.
Wash 1 lb. of fresh spinach under running water. Let the spinach sit in a colander for several minutes to drain.
Place the spinach in a skillet and heat them on medium. Stir the leaves with a wood spoon as they cook to avoid scorching. When the spinach wilts, transfer it back to the colander to drain. Spread the drained spinach along the bottom of a baking dish.
Mix 4 tsp. dried basil, 1 cup chopped red peppers and 2 tbsp. skim or low-fat milk in a blender or food processor to create a sauce. Pour 1/2 of the sauce over the top of the spinach.
Set the cod fillets on top of the spinach and season them with a sprinkle of salt. Pour the remaining sauce over then fish.
Cover the baking dish with a lid or aluminum foil. Bake the fish in the oven for 20 minutes. Remove the cover and poke at the cod with a fork. If done, it should flaky when touched.
Mix 1/4 cup breadcrumbs and 2 tbsp. of grated Parmesan cheese together in a bowl. Sprinkle the crumb mixture over the top of the fish and bake uncovered until the top of the fish browns.