Baked Mackerel with Tomatoes

1. Preparation of ingredients: Clean the mackerel from scales, innards, and head. Slice the tomatoes and onion into rings, mince the garlic, and slice the lemon into thin rounds.
2. Preparing the fish: Salt and pepper the mackerel inside and out. Inside each fish, place a clove of garlic and a few lemon slices.
3. Assembling the dish: In a deep baking dish greased with olive oil, lay a layer of onions, then a layer of tomatoes. On top, place the prepared mackerel. Distribute the remaining tomatoes and onions around the fish.
4. Baking: Bake in a preheated oven at 180 degrees Celsius (356 degrees Fahrenheit) for about 30-40 minutes.
5. Serving: Before serving, sprinkle the dish with fresh herbs. Your baked mackerel with tomatoes is ready!

Enjoy your meal!