Cheesy Meatball Casserole

This casserole is basically comfort food’s greatest hits album – pasta, meatballs, marinara, and melted cheese all hanging out together in one glorious dish.

Picture this: tender whole-wheat fusilli swimming in rich marinara sauce, topped with perfectly seasoned meatballs that bake right in the casserole, getting juicy and flavorful while everything bubbles together.

The genius here is that you’re not standing over a hot stove rolling meatballs and browning them separately – you just nestle those beauties right into the pasta and let the oven do all the work.

Fresh basil and Italian seasoning give these meatballs serious flavor depth, while the panko breadcrumbs keep them incredibly tender and light.

That golden, bubbly mozzarella on top creates the perfect cheesy crust that everyone fights over, and the aroma filling your kitchen will have neighbors mysteriously stopping by around dinnertime.

This is the kind of recipe that makes you look like a total kitchen rockstar while secretly being ridiculously easy to pull off – and it feeds eight people, so you’re covered for leftovers or feeding a crowd.

Ingredients
For the pasta base
- 16 ounces whole-wheat fusilli pasta
- 1 (24-ounce) jar lower-sodium marinara sauce, divided
For the meatballs
- 1 pound 90%-lean ground beef
- ½ cup panko breadcrumbs
- ¼ cup grated sweet onion
- ¼ cup chopped fresh basil, plus more for garnish
- 1 large egg
- 2 teaspoons Italian seasoning
- ½ teaspoon salt
- ½ teaspoon crushed red pepper
For the topping
- 2 cups shredded low-moisture part-skim mozzarella cheese
Instructions
Prepare the pasta base
- 1 Preheat your oven to 350°F (175°C) and bring a large pot of salted water to a rolling boil. The salt should make the water taste like mild seawater – this seasons the pasta from the inside out.
- 2 Add the 16 ounces of whole-wheat fusilli pasta to the boiling water and cook until the center is still somewhat firm, about 4 minutes less than package directions. This undercooking is crucial because the pasta will continue cooking in the oven and absorb the marinara sauce flavors.
- 3 Drain the pasta thoroughly and transfer immediately to a 9-by-13-inch baking dish. Add half of the marinara sauce (about 12 ounces) to the pasta and stir to coat evenly, ensuring every piece is covered.
Form and add the meatballs
- 4 In a large mixing bowl, combine the 1 pound ground beef, ½ cup panko breadcrumbs, ¼ cup grated sweet onion, ¼ cup chopped fresh basil, 1 large egg, 2 teaspoons Italian seasoning, ½ teaspoon salt, and ½ teaspoon crushed red pepper. Using clean hands, gently mix the ingredients just until combined – overmixing will result in tough, dense meatballs.
- 5 Form the mixture into 16 meatballs, each about 1½ inches in diameter. As you form each meatball, nestle it directly into the pasta mixture, spacing them evenly throughout the dish. The meatballs should sit partially submerged in the sauce and pasta.
Finish and bake
- 6 Pour the remaining marinara sauce evenly over the entire casserole, making sure to cover the meatballs and any exposed pasta. Sprinkle the 2 cups shredded mozzarella cheese evenly over the top, creating a generous layer that will melt and bubble.
- 7 Bake for 35 to 40 minutes, until an instant-read thermometer inserted into the center of the largest meatball registers at least 160°F (71°C) and the cheese is lightly golden brown and bubbling around the edges. Let rest for 5 minutes before serving, then garnish with additional fresh basil if desired.
Recommended Equipment and Kitchen Tools
Essential Tools (for best results)
- Large pot – A 6-quart or larger pot ensures pasta has room to cook evenly without sticking together
- 9-by-13-inch baking dish – Glass or ceramic works best for even heat distribution and easy cleanup
- Instant-read thermometer – Takes the guesswork out of ensuring meatballs reach safe internal temperature
- Large mixing bowls – Essential for combining meatball ingredients without making a mess
Helpful Upgrades
- Kitchen scale – More accurate than measuring cups for consistent meatball portions
- Silicone spatula – Perfect for stirring pasta with sauce without scratching your baking dish
- Microplane grater – Creates perfectly fine onion gratings that distribute evenly through meatballs
Nice-to-Have Options
- Parchment paper – Line your baking dish for easier cleanup and serving
- Aluminum foil – Cover during baking if cheese browns too quickly
- Storage containers – This recipe makes great meal prep portions for the week
Recipe Variations and Dietary Modifications
Gluten-Free Adaptation
- Replace whole-wheat fusilli with gluten-free pasta (corn, rice, or chickpea-based work well)
- Substitute gluten-free breadcrumbs or almond flour for panko breadcrumbs
- Check that your marinara sauce is certified gluten-free
- Cooking time remains the same, but gluten-free pasta may need extra sauce
Dairy-Free Modifications
- Use dairy-free mozzarella shreds made from cashew or coconut milk
- Ensure your marinara sauce contains no parmesan or cream
- The meatballs are naturally dairy-free as written
Lower-Carb Version
- Replace pasta with spiralized zucchini noodles or spaghetti squash
- Use crushed pork rinds instead of panko breadcrumbs in meatballs
- Reduce marinara sauce slightly to avoid excess moisture from vegetable noodles
- Baking time may reduce to 25-30 minutes
Flavor Variations
- Mediterranean style: Add sun-dried tomatoes, kalamata olives, and feta cheese
- Spicy version: Double the crushed red pepper and add jalapeños
- Herb garden: Include fresh oregano, thyme, and parsley in meatballs
Nutritional Information and Health Benefits
Key Nutritional Highlights
This hearty casserole provides approximately 385 calories per serving when divided into 8 portions. Each serving delivers about 28 grams of protein from the lean ground beef and mozzarella cheese, 45 grams of carbohydrates from the whole-wheat pasta, and 12 grams of fat. The whole-wheat pasta contributes 6 grams of fiber per serving, supporting digestive health and helping maintain steady blood sugar levels.
Health Benefits of Main Ingredients
The 90%-lean ground beef provides high-quality complete protein, iron for oxygen transport, and B-vitamins for energy metabolism. Whole-wheat fusilli offers complex carbohydrates, fiber, and essential minerals like manganese and selenium. Fresh basil contains antioxidants and anti-inflammatory compounds, while onions provide quercetin, a powerful flavonoid that supports heart health. The lower-sodium marinara sauce reduces unnecessary sodium intake while still delivering lycopene from tomatoes, which supports prostate and heart health.
Dietary Considerations
This recipe contains gluten from wheat pasta and dairy from mozzarella cheese. It’s naturally nut-free and can easily accommodate various dietary needs with simple substitutions. The moderate portion size makes it suitable for balanced meal planning when paired with a green salad or steamed vegetables.
Smart Swaps and Ingredient Substitutions
Common Substitutions:
- Ground beef → Ground turkey, chicken, or plant-based ground meat (adjust seasoning as needed)
- Whole-wheat fusilli → Penne, rigatoni, or any short pasta shape that holds sauce well
- Fresh basil → 2 tablespoons dried basil or fresh oregano
- Panko breadcrumbs → Regular breadcrumbs, crushed crackers, or rolled oats
Budget-Friendly Swaps:
- Part-skim mozzarella → Full-fat mozzarella or a blend of mozzarella and cheddar
- Lower-sodium marinara → Regular marinara sauce (reduce added salt in meatballs)
- Sweet onion → Yellow or white onion, finely minced
Pantry Emergency Substitutions:
- Fresh basil → 1 teaspoon dried Italian herbs plus ½ teaspoon garlic powder
- Italian seasoning → Equal parts dried oregano, basil, and thyme
- Crushed red pepper → Pinch of cayenne pepper or hot sauce to taste
Pro Tips for Substitutions:
- When using ground turkey, add 1 tablespoon olive oil to prevent dryness
- Store leftover fresh basil in olive oil in the refrigerator for up to one week
- Freeze extra marinara sauce in ice cube trays for future recipe portions

Make It Diabetes-Friendly
Carb Reduction Strategies:
- Replace half the pasta with spiralized zucchini or cauliflower florets to reduce carbs by approximately 20 grams per serving
- Use shirataki noodles mixed with regular pasta for significant carb reduction
- Choose sugar-free marinara sauce to eliminate added sugars
Portion & Blood Sugar Management:
- Recommended serving size: 1 cup (⅛ of recipe) provides approximately 35-40 grams of carbohydrates
- Pair with: 2 cups mixed greens salad with olive oil dressing to add fiber and healthy fats
- Timing tip: Serve with lean protein appetizer like Greek yogurt with herbs to slow carbohydrate absorption
Enhanced Nutrition Modifications:
- Add 1 cup chopped spinach to meatball mixture for extra fiber and nutrients
- Include diced bell peppers in the pasta layer for additional vegetables
- Sprinkle with hemp hearts before serving for omega-3 fatty acids and protein
Total Carb Reduction: These modifications can reduce carbohydrates by 15-25 grams per serving while maintaining satisfying flavors and textures.

Perfect Pairing Suggestions
Beverage Pairings
A medium-bodied Chianti or Sangiovese complements the tomato-based sauce and herbs beautifully, while the acidity cuts through the rich cheese. For beer lovers, a wheat beer or light lager provides refreshing contrast to the hearty casserole. Non-alcoholic options include sparkling water with lemon or unsweetened iced tea with fresh mint to cleanse the palate between bites.
Side Dish Recommendations
A crisp Caesar salad with homemade croutons adds textural contrast and fresh flavors that balance the rich casserole. Roasted broccoli with garlic and lemon brightens the meal with vibrant color and nutrients. Garlic bread made with whole-grain baguette satisfies those craving extra carbs, while sautéed green beans with almonds provides a light, crunchy element.
Complete Meal Ideas
Start with bruschetta topped with fresh tomatoes and basil to echo the casserole’s Italian flavors. For dessert, lemon sorbet or fresh berries with whipped cream provides a light, refreshing finish. When entertaining, this casserole works beautifully as part of a build-your-own Italian feast alongside antipasto platters and focaccia bread.
Occasion Suggestions
Perfect for Sunday family dinners, potluck gatherings, and meal prep Sundays. The make-ahead friendly nature makes it ideal for busy weeknight dinners and feeding houseguests with minimal effort.
Pro Tips and Troubleshooting
Professional Techniques
Salt your pasta water generously – it should taste like seawater to properly season the pasta from within. Don’t skip the undercooking step for the pasta; this prevents mushy texture after baking. Wet your hands when forming meatballs to prevent sticking and ensure smooth, even shapes. Let the casserole rest for 5 minutes after baking – this allows the sauce to thicken slightly and makes serving much cleaner.
Common Mistake Prevention
Overmixing meatball ingredients creates tough, dense results – mix just until combined. Overcrowding meatballs leads to uneven cooking; space them evenly throughout the dish. Skipping the thermometer check risks undercooked meat – always verify 160°F (71°C) internal temperature.
Storage and Reheating
Refrigerate leftovers for up to 4 days in covered containers. Reheat individual portions in the microwave for 90 seconds, stirring halfway through. For larger portions, cover with foil and reheat in a 350°F (175°C) oven for 15-20 minutes. Freeze portions for up to 3 months – thaw overnight in refrigerator before reheating.
Make-Ahead Strategy
Assemble the entire casserole up to 24 hours ahead, cover tightly, and refrigerate. Add 10-15 minutes to baking time when cooking from cold. For meal prep, portion into individual containers after cooling completely.
This cheesy meatball casserole proves that the best comfort food doesn’t require complicated techniques or hours in the kitchen – just quality ingredients, smart preparation, and the magic that happens when everything bakes together into golden, bubbling perfection that’ll have everyone asking for seconds.