When a weeknight feels packed and dinner needs to be simple, this 5-ingredient slow cooker chub mackerel recipe is the kind of low-effort meal that saves the day. Using an un-drained can of chub mackerel gives the dish plenty of savory flavor and moisture right from the start, and with just a few pantry staples, it turns into a hearty tomato-based fish mixture that works beautifully over rice, toast, or potatoes. It has that practical, budget-friendly feel I always appreciate when I want something warm and satisfying without hovering over the stove.
Serve this slow cooker mackerel over steamed white rice, buttered egg noodles, mashed potatoes, or thick slices of toasted bread to soak up the sauce. On the side, a simple green salad, steamed green beans, or roasted carrots help round things out and keep dinner feeling balanced, especially if you're stretching this easy recipe into a full family meal.
5-Ingredient Slow Cooker Chub Mackerel
Servings: 4
Ingredients
1 un-drained can chub mackerel (about 14 to 15 ounces)
1 medium yellow onion, thinly sliced
1 can tomato sauce (15 ounces)
2 tablespoons lemon juice
1 teaspoon garlic powder
Directions
1. Add the un-drained chub mackerel to the bottom of the slow cooker, then spoon in the tomato sauce.
2. Scatter the sliced onion over the top, then sprinkle in the garlic powder and drizzle over the lemon juice.
3. Gently break the mackerel into chunky pieces with a spoon and lightly stir everything together so the onions are coated in sauce.
4. Cover and cook on Low for 3 to 4 hours, until the onions are soft and the flavors have blended.
5. Give the mixture one last gentle stir, then serve warm over rice, noodles, mashed potatoes, or toast.
Variations & Tips
Make it heartier: Add a drained can of white beans or chickpeas during the last hour of cooking if you want to stretch the meal a bit further for a hungry family.
Add gentle heat: Stir in a pinch of red pepper flakes or a little diced jalapeno if your family likes a warmer, slightly spicy tomato sauce.
Keep the fish chunky: Chub mackerel is fairly delicate once warmed, so stir lightly to keep some larger pieces intact instead of turning the mixture into a spread.
Prep-ahead tip: Slice the onion the night before and keep the other ingredients together so you can dump everything into the slow cooker in just a minute or two before work.
Serving idea: If you have extra fresh lemon, offer wedges at the table. That last squeeze really brightens the richer flavor of the mackerel.