This 5-ingredient slow cooker mackerel is the kind of easy pantry meal that saves the day when the fridge looks a little bare but everyone still needs a warm dinner. Using undrained canned mackerel gives the dish plenty of savory flavor and tenderness, and the slow cooker helps all the simple ingredients come together into a rich, comforting meal with very little hands-on work.
Serve this mackerel over hot rice, buttered noodles, mashed potatoes, or thick slices of toasted bread to soak up the sauce. For a little balance on the plate, I like to add steamed green beans, peas, a simple cucumber salad, or roasted carrots, especially if I am feeding a family and want the meal to feel extra complete.
5-Ingredient Slow Cooker Mackerel
Servings: 4
Ingredients
2 cans undrained mackerel
Directions
1. Lightly coat the inside of the slow cooker with cooking spray or a thin wipe of oil if desired for easier cleanup.
2. Add the undrained canned mackerel to the bottom of the slow cooker, gently breaking it into large chunks.
3. Spoon the condensed cream of mushroom soup over the fish, then add the sliced onion, lemon juice, and black pepper.
4. Gently spread the soup mixture so the fish is mostly covered, then place the lid on the slow cooker.
5. Cook on low for 2 to 3 hours, just until the onion softens and the mixture is hot and bubbly. Stir very gently once near the end so the mackerel keeps some texture.
6. Serve hot over rice, noodles, mashed potatoes, or toast, with a spoonful of the creamy sauce over each portion.
Variations & Tips
For picky eaters: If your family prefers a milder flavor, stir the mackerel a little more so it blends into the sauce and serve it over rice or noodles. That softens the fish texture and makes the dish feel extra familiar.
Add a vegetable: Sliced mushrooms, frozen peas, or chopped celery can go right into the slow cooker if you want to stretch the meal a bit. Just keep in mind that adding too much can thin the sauce, so a small handful is usually plenty.
Make it brighter: A little extra lemon juice stirred in just before serving can wake up the whole dish. I also like a little chopped parsley on top if I have some on hand, even though it is not necessary.
Watch the cooking time: Since the mackerel is already cooked, this recipe does not need a long slow cook. The goal is simply to heat everything through and soften the onions without breaking the fish down too much.
