1-First step: prep the fish Pat the 1.5 pounds of cod loin fillet dry with paper towels. Lightly season both sides with salt and pepper. Dry fish browns and bakes better, and it also keeps the sauce from getting watery.

2-Second step: build the lemon garlic base In a small bowl, mix the 2 tablespoons olive oil, 4 tablespoons lemon juice, and 4 cloves minced garlic. Add a little more or less garlic depending on your taste. This mixture becomes the flavor foundation for the lemon garlic cod.

3-Third step: arrange the cod in the baking dish Place the cod in a lightly greased baking dish in a single layer. Spoon the lemon garlic mixture over the fish so it coats the top evenly. If you have extra sauce, let it pool around the fillets for added moisture while baking.

4-Fourth step: add the butter Scatter the 0.25 cup diced butter around and on top of the fish. As the butter melts, it blends with the lemon juice and garlic to create the rich butter sauce that gives this recipe its signature flavor. Add the 1 small lemon, sliced, over the top or around the sides of the fish.

5-Fifth step: bake until flaky Bake at 400°F for about 12 to 18 minutes, depending on the thickness of the cod. Thin pieces may finish a little sooner, while thicker fillets can take closer to 20 minutes. The fish is ready when it turns opaque and flakes easily with a fork. If you use a thermometer, aim for 145°F in the center.

6-Final step: finish and serve Remove the dish from the oven and let the fish rest for 2 minutes. Spoon some of the pan sauce over the fillets, then sprinkle with chopped parsley if you like. Serve warm with rice, roasted vegetables, mashed potatoes, or a crisp salad. The sauce is simple, but it brings everything together in a really satisfying way.