This easy baked supper is the kind of comforting shortcut recipe busy families come back to again and again. Using frozen meatballs, jarred pasta sauce, sliced provolone, and refrigerated biscuits keeps prep wonderfully simple, but the finished bake still delivers all the cozy flavors of a meatball sub in a scoopable casserole form. It is especially handy on weeknights when you need something hearty, filling, and kid-friendly without standing over the stove.
Serve this casserole with a crisp green salad, simple roasted broccoli, or green beans to balance the rich, cheesy sauce. If you want to lean into the sandwich-shop feel, add a side of dill pickles, banana peppers, or a little extra warmed sauce for spooning over each serving. For a casual family meal, it also pairs nicely with fruit salad or a cold glass of iced tea.
Oven Baked 4-Ingredient Meatball Sub Casserole
Servings: 6
Ingredients
1 bag (26 oz) frozen beef meatballs
1 jar (24 oz) pasta sauce
8 slices provolone cheese
1 can (16 oz) refrigerated biscuits, quartered
Directions
1. Preheat the oven to 375°F and lightly grease a 9x13-inch baking dish.
2. Spread the frozen meatballs in a single layer in the baking dish straight from the bag. Do not thaw them first.
3. Pour the pasta sauce evenly over the meatballs, making sure each one is well coated. Cover the dish tightly with foil.
4. Bake covered for 40 to 45 minutes, or until the meatballs are heated through and the centers reach 165°F.
5. Remove the foil, arrange the quartered biscuit pieces over and around the saucy meatballs, then lay the provolone slices across the top.
6. Return the dish to the oven uncovered and bake 10 to 15 minutes more, until the biscuits are golden and the cheese is melted and bubbly. Let it rest for 5 minutes before serving.
Variations & Tips
For extra seasoning: If your family likes a little more flavor, sprinkle a bit of Italian seasoning, garlic powder, or crushed red pepper over the sauce before baking. It still keeps the recipe easy, but gives it a more homemade taste.
For picky eaters: Cut the biscuit pieces a little smaller so they bake up like soft, cheesy bites throughout the casserole. This can make the texture more appealing for kids who are unsure about larger biscuit pieces on top.
Cheese swap: Mozzarella works beautifully if that is what you have on hand, and a mix of provolone and mozzarella gives you that classic pizzeria-style melt. Just be sure the cheese covers the top well so every serving gets some.
Don’t skip the covered bake: Starting the casserole covered is important because the frozen meatballs need time to heat all the way through before the cheese and biscuits go on. Checking for 165°F in the center gives you the best result.
Make serving easier: Letting the casserole rest for a few minutes after baking helps the sauce settle and makes it easier to scoop neat portions. A wide serving spoon works better than a spatula for getting a little of everything in each helping.