These 5-Ingredient Oven Baked Flaked Tuna Pouches are the kind of weeknight supper that comes together from pantry staples but still feels warm and satisfying. Using foil-pouch tuna keeps the prep especially simple, and baking everything together in one pan gives the fish a savory, casserole-like finish with very little effort. It is a practical recipe for busy evenings when you want something budget-friendly, protein-rich, and a little more interesting than a plain tuna sandwich.
Serve this baked tuna over hot rice, buttered noodles, mashed potatoes, or thick slices of toasted bread to soak up the flavorful juices. A crisp green salad, steamed broccoli, green beans, or simple roasted carrots make nice vegetable sides, and a squeeze of lemon at the table brightens the whole dish. If you want a heartier meal, pair it with a baked potato or a small dish of macaroni and cheese.
5-Ingredient Oven Baked Flaked Tuna Pouches
Servings: 4
Ingredients
4 foil pouches flaked tuna, about 2.6 ounces each
1 medium onion, thinly sliced
2 medium tomatoes, diced
1/2 cup mayonnaise
1 cup shredded cheddar cheese
Directions
1. Preheat the oven to 375°F. Lightly grease a medium oven-safe roasting pan or baking dish.
2. Open the tuna pouches and empty the flaked tuna into the prepared pan. Spread it out evenly, then scatter the sliced onion and diced tomatoes over the top.
3. Dollop the mayonnaise across the surface and gently spread it so the tuna mixture is lightly covered. Sprinkle the shredded cheddar cheese evenly over everything.
4. Bake for 20 to 25 minutes, or until the cheese is melted and the edges are bubbling. If you like a little color on top, broil for 1 to 2 minutes at the end, watching carefully.
5. Let the dish rest for 5 minutes before serving so the juices settle slightly. Spoon onto plates and serve hot.
Variations & Tips
Add herbs: A spoonful of chopped parsley, dill, or chives added just before serving brings freshness and a little color to the rich tuna and cheese.
Make it creamier: Stir 1/4 cup sour cream into the mayonnaise before spreading it over the tuna if you want a softer, more casserole-like texture.
Use a different cheese: Monterey Jack, mozzarella, or a mild Colby blend all melt nicely and give the dish a slightly different character without changing the method.
Bulk it up: Fold in cooked rice, cooked pasta, or thawed frozen peas before baking to stretch the dish and turn it into a more complete one-pan supper.
Watch the salt: Foil-pouch tuna and cheese can both bring plenty of seasoning, so taste a small spoonful after baking before adding any extra salt at the table.