Ingredients for - Baked Tilapia Sandwiches

1. Tilapia fillets 4 (4 ounce)
2. Olive oil, divided, or as needed 2 tablespoons
3. Cajun seasoning, or to taste ½ teaspoon
4. Salt and ground black pepper to taste 1 pinch
5. Onions, thinly sliced 2 medium
6. Diced tomatoes, drained 1 (14.5 ounce) can
7. Capers 2 tablespoons
8. Submarine sandwich rolls, split 4

How to cook deliciously - Baked Tilapia Sandwiches

1 . Stage

Preheat the oven to 400 degrees F (200 degrees C).

2 . Stage

Brush tilapia lightly with 1 tablespoon olive oil and then sprinkle with Cajun seasoning. Season both sides with salt and pepper and place on a baking sheet.

3 . Stage

Bake in the preheated oven until fish flakes easily with a fork, about 15 minutes.

4 . Stage

While fish is cooking, heat remaining olive oil in a pan over medium-high heat. Add onions and saute until tender, 5 to 7 minutes. Season with salt and pepper. Add tomatoes and capers; cook until heated through, 3 to 5 minutes.

5 . Stage

Place fish on rolls and top with onion, tomato, and caper mixture.