Fisherman's Pie

This cheesy casserole has moist chunks of fish in a rich white sauce and is a great way to use up leftover mashed potatoes.

• Preparation Time: 15 mins
• Cooking Time: 60 mins
• Total Time: 1 hr 15 mins
• Calories: 406 Calories

Ingredients

• 3 tablespoons butter
• 1 teaspoon salt, or to taste
• 1 (10 ounce) package frozen chopped spinach, thawed and drained
• 2 cups mashed potatoes
• 1 clove garlic, pressed
• 1 pound cod fillets, cut into chunks
• 1 cup shredded sharp white Cheddar cheese
• 1 cup shredded yellow Cheddar cheese
• 2.5 tablespoons all-purpose flour
• 0.5 cup minced onion
• 0.5 teaspoon ground black pepper, or to taste
• 1.5 cups warm milk, or more as needed

Recipe Instructions

Step 1

Preheat the oven to 375 degrees F (190 degrees C).

Step 2

Arrange cod in a single layer in a large baking dish; set aside.

Step 3

Melt butter in a saucepan over medium-low heat. Whisk in flour, and stir until the mixture becomes paste-like and light golden brown, 2 to 5 minutes.

Step 4

Gradually whisk warm milk into the flour mixture and bring to a simmer over medium heat. Whisk until the sauce is thick and smooth, about 5 minutes.

Step 5

Whisk in white Cheddar cheese, then mix onion, spinach, salt, and black pepper into the sauce.

Step 6

Remove saucepan from heat and stir in garlic. If sauce is too thick, stir in more warm milk, 1 tablespoon at a time.

Step 7

Pour sauce over fish in baking dish.

Step 8

Layer mashed potatoes on top.

Step 9

Bake in the preheated oven for 30 minutes, then sprinkle with yellow Cheddar cheese. Continue baking until fish is easily flaked with a fork, 15 to 20 minutes more.