Toss frozen meatballs in the casserole dish with 4 other ingredients and watch your family line up for seconds before dinner's even plated.

This 4-ingredient oven beef meatball bake using frozen meatballs is the kind of weeknight lifesaver every busy family needs. You literally toss everything right into the casserole dish, slide it into the oven, and let it bubble away while you set the table or help with homework. No frying pans, no extra bowls, and hardly any cleanup. It’s cozy, hearty, and kid-friendly, with classic Italian-style flavors that taste like you fussed a lot more than you actually did.

Serve this meatball bake spooned over hot cooked pasta, egg noodles, or mashed potatoes to soak up all that saucy, cheesy goodness. A simple green salad or steamed green beans on the side balances out the richness, and a loaf of garlic bread or buttered rolls is perfect for swiping through the pan. If you’re feeding a crowd, set the baking dish in the center of the table with a big serving spoon and let everyone help themselves family-style.

Servings: 6

1 (24–26 ounce) jar marinara or pasta sauce

Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch casserole dish so the cheese and sauce don’t stick.

Pour about 1 cup of the marinara or pasta sauce into the bottom of the casserole dish and spread it around to coat the base.

Add the frozen fully cooked beef meatballs straight from the freezer into the casserole dish, arranging them in a single, snug layer so they’re evenly spaced. It’s fine if they touch.

Pour the remaining marinara or pasta sauce evenly over the meatballs, making sure most of them are coated in sauce so they heat and stay tender.

Sprinkle the dried Italian seasoning evenly over the saucy meatballs for extra flavor.

Top the meatballs with the shredded mozzarella cheese, spreading it all the way to the edges. Then sprinkle the grated Parmesan cheese over the top for a golden, slightly salty finish.

Cover the casserole dish tightly with foil and bake for 25 minutes, or until the meatballs are hot in the center and the sauce is bubbling around the edges.

Remove the foil and bake for another 10–15 minutes, or until the cheese is fully melted, lightly browned in spots, and the internal temperature of the meatballs reaches at least 165°F (74°C).

Let the meatball bake rest for 5 minutes before serving so the sauce thickens slightly and the cheese sets a bit. Serve right from the dish with your favorite sides.

For picky eaters, you can use a plain tomato basil sauce and reduce or skip the Italian seasoning if they’re sensitive to herbs. If your family likes things extra cheesy, add another 1/2 cup of mozzarella on top during the last 5 minutes of baking. To sneak in a few veggies without changing the simplicity, stir 1–2 cups of frozen bell pepper strips or frozen spinach into the sauce before adding the cheese (just know this technically adds more ingredients beyond the core four). For a little heat, sprinkle crushed red pepper flakes over the sauce before the cheese. You can also swap the Italian seasoning for dried basil or dried oregano if that’s what you have on hand. Food safety tips: Always use fully cooked frozen beef meatballs from a reputable brand and keep them frozen until you’re ready to bake. Make sure the meatballs reach an internal temperature of at least 165°F (74°C) before serving; if you don’t have a thermometer, check that they’re piping hot in the center and the sauce is vigorously bubbling. Refrigerate leftovers within 2 hours, store in a covered container for up to 3–4 days, and reheat until steaming hot before eating.