This 5-ingredient slow cooker herring is a budget-friendly, pantry-based supper that comes together with very little fuss, which is exactly why it can be such a lifesaver on a busy day. Using undrained canned herring gives the dish plenty of savory flavor right from the start, and the slow cooker helps mellow and blend everything into a warm, comforting meal that feels hearty enough for the table without requiring much hands-on work.
Serve this herring over hot mashed potatoes, buttered egg noodles, or steamed rice to soak up the rich sauce. A side of green beans, peas, roasted carrots, or a crisp cucumber salad helps balance the meal nicely, and a slice of rye bread or simple dinner rolls makes it feel especially homey.
5-Ingredient Slow Cooker Herring
Servings: 4
Ingredients
2 cans undrained herring fillets
1 medium onion, thinly sliced
1 cup canned diced tomatoes
2 tablespoons tomato paste
1 teaspoon black pepper
Directions
1. Lightly coat the inside of the slow cooker with nonstick spray if desired for easier cleanup. Pour the undrained canned herring fillets into the bottom of the slow cooker.
2. Scatter the sliced onion over the herring, then spoon in the diced tomatoes and tomato paste. Sprinkle the black pepper evenly across the top.
3. Cover and cook on low for 2 to 3 hours, just until the onions have softened and the flavors have blended. Try not to stir too much so the fillets stay as intact as possible.
4. Gently spoon the herring and sauce onto mashed potatoes, noodles, or rice, and serve hot.
Variations & Tips
Milder Flavor: If you want a softer fish flavor for picky eaters, add a spoonful of sour cream at the end and stir very gently before serving. It smooths out the sauce and makes the dish taste a little creamier.
Heartier Meal: For an even more filling supper, serve the herring over boiled potatoes or thick buttered noodles. The sauce is simple, so it really benefits from something starchy underneath to catch every bit.
Add a Little Sweetness: If your family likes a sweet-and-savory balance, stir in 1 to 2 teaspoons of brown sugar with the tomatoes. That small touch can round out the acidity and give the sauce a more old-fashioned flavor.
Cooking Tip: Because canned herring is already cooked, this recipe does not need a long slow-cooker time. Keep an eye on it after 2 hours so the fish stays tender and doesn't break down too much.