Tilapia and Vegetable Casserole Recipe

This Tilapia and Vegetable Casserole recipe is a simple, flavorful dish perfect for family dinners or meal prepping. With tender tilapia fillets marinated in a savory buttermilk and soy sauce blend, and a colorful mix of bell peppers, carrots, and onions, this casserole provides a balanced meal rich in protein and vegetables. The fish is sautéed until golden, then layered with sautéed veggies, a creamy mayo and ketchup topping, and baked to perfection. Easy to prepare, this dish is ideal for anyone looking for a healthy, one-pan dinner with minimal cleanup. Whether you’re new to cooking or an experienced home chef, this recipe is sure to become a favorite. Perfect for those looking for quick, nutritious meals that don’t compromise on taste.

Ingredients:

Tilapia:

• 2 lbs (about 6-10 fillets) Tilapia, thawed
• Olive oil, for sautéing
• 1 Tbsp ketchup (or substitute with sriracha for a spicy kick)
• 1 Tbsp mayonnaise

Marinade:

• 2 eggs
• 1 cup buttermilk
• 2 Tbsp soy sauce
• ½ tsp salt
• ⅛ tsp pepper

Vegetables:

• 2 medium bell peppers (red, orange, or yellow)
• 2 medium/large carrots, julienned or grated
• 1 medium onion

Instructions:

1. Marinate the Tilapia: Whisk together the marinade ingredients: eggs, buttermilk, soy sauce, salt, and pepper. Combine the marinade and tilapia in a large ziplock bag or bowl. Let the fish marinate in the fridge for about 1 ½ hours.
2. Prepare the Vegetables: Slice the onion into thin half-circles, slice the bell peppers into thin strips, and julienne or grate the carrots. Heat 2-3 Tbsp of olive oil in a large skillet over medium-high heat. Add the onions and sauté for about 3 minutes until softened. Add the bell peppers and carrots and sauté for another 4-5 minutes until softened. Remove the vegetables from the skillet and set them aside.
3. Cook the Fish: Once the tilapia has marinated, drain and discard the marinade. In the same skillet, add 2-3 Tbsp of olive oil and sauté the tilapia fillets on each side for about 2 minutes until golden on the outside (the fish doesn’t need to be fully cooked through at this stage).
4. Assemble the Casserole: Preheat the oven to 375°F. In a casserole dish, layer half of the sautéed vegetables at the bottom. Place the sautéed tilapia fillets over the vegetables. In a small bowl, stir together 1 Tbsp ketchup and 1 Tbsp mayonnaise. Brush this mixture evenly over the tilapia. Top with the remaining sautéed vegetables, then sprinkle with salt and pepper to taste.
5. Bake: Cover the casserole dish tightly with foil or a lid and bake for 15 minutes until the fish is cooked through and the vegetables are tender.

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Why You’ll Love This Recipe

This tilapia and vegetable casserole is a well-balanced and easy-to-make meal that combines the delicate flavor of tilapia with a medley of sautéed vegetables. The flavorful marinade adds depth to the fish, while the creamy ketchup and mayo topping enhances the dish. Perfect for busy weeknights or a healthy family dinner, this casserole offers a satisfying meal that’s both nutritious and full of flavor.

Tips

• Marinate the Fish Longer: For an even deeper flavor, you can marinate the fish for up to 2 hours, but be careful not to exceed that to avoid altering the texture of the fish.
• Vegetable Variations: Feel free to swap or add other vegetables such as zucchini, mushrooms, or spinach to complement the dish.
• Use Fresh Tilapia: If possible, use fresh tilapia for the best taste and texture.

Variations and Substitutions

• Spicy Option: If you prefer a spicy version, replace the ketchup with sriracha or add more hot sauce to the mayo-ketchup mixture.
• Non-Dairy Version: Replace buttermilk with a dairy-free alternative like coconut milk or almond milk, and use vegan mayo.
• Protein Options: This casserole can also work well with other white fish like cod or haddock.

FAQs

Can I make this casserole ahead of time? Yes! You can prepare the casserole ahead of time, assemble it, and refrigerate it. When ready to bake, just pop it into the oven, but you may need to add a few extra minutes of cooking time.

Can I freeze the casserole? Yes, this casserole freezes well. After assembling, cover it tightly with foil and freeze for up to 2 months. Thaw in the fridge overnight before baking.

What sides go well with this casserole? This casserole pairs beautifully with a fresh salad, roasted potatoes, or a light quinoa side dish.

Serving

Serve this tilapia and vegetable casserole with a side of steamed rice, garlic bread, or a fresh green salad. It’s a complete meal that combines lean protein, healthy vegetables, and rich flavors.

Suggestions

• Garnish the casserole with fresh herbs like parsley or dill for an added burst of freshness.
• For extra crunch, sprinkle breadcrumbs or crushed crackers on top of the casserole before baking.