The last time I made mackerel with lemon and vegetables was when I wanted something quick, filling, and without too many dishes to wash. The mackerel from the freezer solves many problems. It's suitable for fasting days when fish is allowed, but it works anytime you crave something fresh without spending too much time in the kitchen. The recipe is simple, with no complicated steps or rare ingredients. The lemon adds freshness, and the vegetables make everything more colorful and easier to eat.
Quick info
Total time: 55 minutes
Servings: 4-6
Difficulty: easy
Ingredients
6 pieces of mackerel (cleaned, about 1.2-1.5 kg)
1-2 lemons
500 g mixed vegetables: baby carrots, peas, mushrooms, corn, red bell pepper
1 cup water (approx. 200 ml)
2-3 tablespoons oil (preferably sunflower or olive oil)
1 teaspoon salt
½ teaspoon freshly ground black pepper
1 teaspoon vegetable seasoning or other vegetable spice mix
Preparation steps
1. Take the mackerel out of the freezer and let it thaw completely. Clean it well inside if it’s not already cleaned and remove any remaining scales. Wash the fish and let it drain in a sieve.
2. Dry each piece with paper towels. Sprinkle salt and pepper inside and outside. Cut the lemon into thin slices. Place a slice in the belly of each mackerel.
3. Grease a large baking dish with a little oil. Arrange the fish in the dish. Drizzle with another 1-2 tablespoons of oil on top. Add a cup of water to the dish next to the fish, not directly over them.
4. Place the dish in the oven on the middle rack at 180°C (medium heat). Leave for 40 minutes. If you want the skin to be more browned, turn on the grill for the last 5 minutes.
5. Meanwhile, boil the vegetables in water with a teaspoon of seasoning or salt for 7-8 minutes. Drain them immediately after they have softened a bit, so they remain colorful and firm.
6. Heat a pan with a tablespoon of oil. Add the boiled vegetables and sauté for 5 minutes over medium heat, stirring occasionally. Do not let them get too soft.
7. Remove the fish from the oven when they are cooked through and the skin is slightly golden. Serve each portion with vegetables on the side and a piece of lemon.
Why I make this recipe often
It doesn’t require much attention. The ingredients are simple and readily available. Mackerel is easily found frozen. It’s perfect for family meals or when you have guests. It stays good the next day. It’s easy to make large portions without complications.
Tips and variations
Tips
Don’t use too much water in the dish, just enough to prevent the fish from drying out while baking.
If the mackerel is not already gutted, do this step when it’s almost completely thawed, it cleans easier.
Lemon removes the specific fish smell and adds a fresh taste, don’t skip it.
Do not overlap the fish in the dish. They should be in a single layer to cook evenly.
Substitutions
You can use salmon, trout, or herring if you don’t have mackerel; the baking time varies slightly depending on thickness.
The seasoning can be omitted or replaced with salt and dried herbs (basil, thyme, rosemary).
Variations
Add a few crushed garlic cloves among the fish for a more intense flavor.
You can also add some halved cherry tomatoes in the dish next to the fish.
For vegetables, vary based on what you have in the freezer: broccoli, green beans, sweet potatoes.
Mackerel also works with a thin layer of onion rings under the fish, which caramelizes easily while baking.
Serving ideas
Serve with warm polenta or plain rice.
For a richer meal, add a green salad with vinegar and oil on the side.
If there’s leftover fish, you can turn it into a cold salad with vegan mayonnaise and green onions.
Frequently asked questions
Does the mackerel need to be completely thawed before cooking?
Yes, for the fish to cook evenly, it is important that it is completely thawed and well-drained of water.
Can I use frozen vegetables?
Yes, it’s actually more convenient. Boil them for a few minutes and then sauté them quickly. There’s no need to thaw them beforehand.
If I don’t have seasoning, what should I use?
You can use just salt or salt and pepper. If you have, you can add dried herbs or a little garlic powder.
What should I do if the fish releases a lot of liquid while baking?
It’s normal for mackerel to release water, but if you want a thicker sauce, you can remove some of the liquid towards the end or increase the oven temperature for the last 10 minutes.
Can I make the recipe only with fish fillets?
Yes, but the baking time decreases. Mackerel fillets cook faster, about 20-25 minutes.
Nutritional values
Estimation for one serving (1/6 of the recipe, with vegetables):
Calories: 260-290
Protein: 23 g
Fat: 17 g
Carbohydrates: 9-12 g
Mackerel is rich in Omega-3, and the vegetables add fiber. It doesn’t have many carbohydrates. It’s gluten-free, a good option for those with intolerance.
Storage and reheating
Cooked mackerel lasts in the fridge for 2 days, well covered. It can be reheated in the oven or microwave, but no more than 2-3 minutes to avoid drying out. The vegetables should be stored separately. If you want it cold, it works well in a salad.
Quick info
Total time: 55 minutes
Servings: 4-6
Difficulty: easy
Ingredients
6 pieces of mackerel (cleaned, about 1.2-1.5 kg)
1-2 lemons
500 g mixed vegetables: baby carrots, peas, mushrooms, corn, red bell pepper
1 cup water (approx. 200 ml)
2-3 tablespoons oil (preferably sunflower or olive oil)
1 teaspoon salt
½ teaspoon freshly ground black pepper
1 teaspoon vegetable seasoning or other vegetable spice mix
Preparation steps
1. Take the mackerel out of the freezer and let it thaw completely. Clean it well inside if it’s not already cleaned and remove any remaining scales. Wash the fish and let it drain in a sieve.
2. Dry each piece with paper towels. Sprinkle salt and pepper inside and outside. Cut the lemon into thin slices. Place a slice in the belly of each mackerel.
3. Grease a large baking dish with a little oil. Arrange the fish in the dish. Drizzle with another 1-2 tablespoons of oil on top. Add a cup of water to the dish next to the fish, not directly over them.
4. Place the dish in the oven on the middle rack at 180°C (medium heat). Leave for 40 minutes. If you want the skin to be more browned, turn on the grill for the last 5 minutes.
5. Meanwhile, boil the vegetables in water with a teaspoon of seasoning or salt for 7-8 minutes. Drain them immediately after they have softened a bit, so they remain colorful and firm.
6. Heat a pan with a tablespoon of oil. Add the boiled vegetables and sauté for 5 minutes over medium heat, stirring occasionally. Do not let them get too soft.
7. Remove the fish from the oven when they are cooked through and the skin is slightly golden. Serve each portion with vegetables on the side and a piece of lemon.
Why I make this recipe often
It doesn’t require much attention. The ingredients are simple and readily available. Mackerel is easily found frozen. It’s perfect for family meals or when you have guests. It stays good the next day. It’s easy to make large portions without complications.
Tips and variations
Tips
Don’t use too much water in the dish, just enough to prevent the fish from drying out while baking.
If the mackerel is not already gutted, do this step when it’s almost completely thawed, it cleans easier.
Lemon removes the specific fish smell and adds a fresh taste, don’t skip it.
Do not overlap the fish in the dish. They should be in a single layer to cook evenly.
Substitutions
You can use salmon, trout, or herring if you don’t have mackerel; the baking time varies slightly depending on thickness.
The seasoning can be omitted or replaced with salt and dried herbs (basil, thyme, rosemary).
Variations
Add a few crushed garlic cloves among the fish for a more intense flavor.
You can also add some halved cherry tomatoes in the dish next to the fish.
For vegetables, vary based on what you have in the freezer: broccoli, green beans, sweet potatoes.
Mackerel also works with a thin layer of onion rings under the fish, which caramelizes easily while baking.
Serving ideas
Serve with warm polenta or plain rice.
For a richer meal, add a green salad with vinegar and oil on the side.
If there’s leftover fish, you can turn it into a cold salad with vegan mayonnaise and green onions.
Frequently asked questions
Does the mackerel need to be completely thawed before cooking?
Yes, for the fish to cook evenly, it is important that it is completely thawed and well-drained of water.
Can I use frozen vegetables?
Yes, it’s actually more convenient. Boil them for a few minutes and then sauté them quickly. There’s no need to thaw them beforehand.
If I don’t have seasoning, what should I use?
You can use just salt or salt and pepper. If you have, you can add dried herbs or a little garlic powder.
What should I do if the fish releases a lot of liquid while baking?
It’s normal for mackerel to release water, but if you want a thicker sauce, you can remove some of the liquid towards the end or increase the oven temperature for the last 10 minutes.
Can I make the recipe only with fish fillets?
Yes, but the baking time decreases. Mackerel fillets cook faster, about 20-25 minutes.
Nutritional values
Estimation for one serving (1/6 of the recipe, with vegetables):
Calories: 260-290
Protein: 23 g
Fat: 17 g
Carbohydrates: 9-12 g
Mackerel is rich in Omega-3, and the vegetables add fiber. It doesn’t have many carbohydrates. It’s gluten-free, a good option for those with intolerance.
Storage and reheating
Cooked mackerel lasts in the fridge for 2 days, well covered. It can be reheated in the oven or microwave, but no more than 2-3 minutes to avoid drying out. The vegetables should be stored separately. If you want it cold, it works well in a salad.