Easy Fish Casserole
This fish casserole has creamy cheesy fish baked under crispy buttery bread crumbs. It's super easy to throw together – and it's done in only 20 minutes.
Servings: 8 servings
Ingredients
- 3 Tablespoons butter, divided
- 1 Tablespoon kosher salt
- 2-3 cups fresh baby spinach
- 1 pound your favorite boneless fish fillets, cut into bite size pieces
- 1 pound large shrimp, 16-22 count, peeled and deveined
- ⅔ cup mayonnaise
- 2 teaspoons Old Bay Seasoning
- 4 ounces shredded cheddar cheese
- 4 ounces shredded mozzarella cheese
- ½ cup panko bread crumbs
Instructions
- Preheat oven to 375 degrees F.
- Grease a 2 quart casserole dish with 1 Tablespoon of the butter.
- Add the fish to the boiling water and cook for 1 minute. Remove with the same strainer and transfer to a large mixing bowl.
- Add the shrimp to the boiling water and cook for 1 minute. Immediately remove with strainer and transfer to same large mixing bowl.
- Let the fish and shrimp cool for about 5 minutes then drain off any water that collects at the bottom of the bowl, or use a paper towel to soak up any liquid at the bottom of the bowl.
- To the fish and shrimp, add mayonnaise and Old Bay Seasoning and stir to coat.
- Sprinkle on the cheese and cooked spinach and stir again to combine. Transfer the fish mixture to your prepared casserole dish, spreading it evenly into the pan.
- Melt remaining 2 Tablespoons of butter in the microwave for about 10 - 15 seconds.
- Then in a separate small bowl, stir together the 2 Tablespoons melted butter and ½ cup panko bread crumbs until crumbs are evenly moistened. Sprinkle crumbs over the fish mixture.
- Bake uncovered at 375 degrees F for about 15 minutes or until the center reaches 145 degrees F using an instant-read thermometer. Now broil for about 2 minutes to brown the bread crumbs. Let it cool slightly for about 5 minutes before serving.
