On busy weeknights, I love recipes that let me lean on a freezer shortcut without sacrificing that homemade-dinner feeling, and these 5-Ingredient Oven Baked Tuna Meatballs do exactly that. You simply layer frozen raw tuna meatballs in a casserole dish with a few pantry and fridge staples, then let the oven do the work. The result is a cozy, family-friendly main dish with tender meatballs and a flavorful sauce that feels a little special even though it takes very little effort.
Serve these tuna meatballs over steamed rice, buttered noodles, or fluffy mashed potatoes to soak up the sauce. A simple green salad, roasted broccoli, or green beans on the side keeps dinner balanced, and some warm bread is always welcome if you want to scoop up every bit from the dish.
5-Ingredient Oven Baked Tuna Meatballs
Servings: 4
Ingredients
1 bag frozen raw tuna meatballs, about 20 ounces
1 1/2 cups marinara sauce
1 cup shredded mozzarella cheese
2 tablespoons olive oil
2 tablespoons chopped parsley
Directions
1. Preheat your oven to 400°F and lightly brush or drizzle the olive oil over the bottom of an oven-safe casserole dish.
2. Add the frozen raw tuna meatballs to the casserole dish in a single layer, leaving a little space between them if possible.
3. Spoon the marinara sauce evenly over the meatballs, turning a few gently so they get coated on all sides.
4. Cover the dish tightly with foil and bake for 25 minutes, then remove the foil, sprinkle the mozzarella over the top, and bake for another 10 to 15 minutes until the meatballs are cooked through and the cheese is melted and bubbly.
5. Sprinkle with chopped parsley and serve hot straight from the casserole dish or spooned over rice, noodles, or potatoes.
Variations & Tips
Make it creamy: Stir a few spoonfuls of cream cheese or a splash of heavy cream into the marinara before baking if you want a richer, softer sauce.
Swap the cheese: Mozzarella keeps things mild and kid-friendly, but provolone, Monterey Jack, or a little grated Parmesan also work well if that is what you have on hand.
Add vegetables: If you want to stretch dinner a bit, scatter sliced zucchini, mushrooms, or baby spinach around the meatballs before baking. Just keep the layer fairly even so everything cooks nicely.
Check doneness: Because frozen raw tuna meatballs can vary in size, make sure the centers are fully cooked before serving. If your meatballs are larger, they may need a few extra minutes in the oven.
Meal prep tip: This dish reheats well for lunch the next day. I like to portion leftovers with rice into containers, which makes weekday lunches feel completely handled.