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This 4-Ingredient Casserole Is the All-In-One Recipe We've Been Missing

Dinner 🍽️Lunch 🥪 Italian 🇮🇹 High-Protein 💪Sugar-FreeComfort-FoodClean Eating

This 4-Ingredient Casserole layers al dente spaghetti with punchy arrabbiata, tender meatballs, and stretchy mozzarella for a cozy, satisfying bake. It delivers a hearty, saucy bite with melty cheese on top and slices neatly once rested—great for weeknights with leftovers that freeze beautifully.

  • Prep15 mins
  • Cook1 hr
  • Serves4
  • DifficultyEasy
This 4-Ingredient Casserole Is the All-In-One Recipe We've Been Missing
  1. 1

    Preheat the oven to 350 degrees F (180 degrees C). Arrange the meatballs on a baking tray.

  2. 2

    Bake the meatballs in the preheated oven until a slight crust forms, about 15 minutes (they will not be fully cooked). Cover and set aside to keep warm.

  3. 3

    Meanwhile, bring a large pot of salted water to a boil and add the spaghetti. Cook for about 10 minutes, or 1 minute less than the package directions for slightly firm pasta, then drain thoroughly.

  4. 4

    In a large casserole dish, pour about 1/2 cup of the pasta sauce along the bottom and spread to coat. Add the spaghetti evenly over the sauce to cover the entire bottom of the dish.

  5. 5

    Arrange the meatballs in rows over the spaghetti, about 3 in each row for a total of 6 rows. Cover the meatballs and spaghetti evenly with the remaining sauce. Sprinkle with 1/2 cup mozzarella; cover the dish with foil.

  6. 6

    Bake in the preheated oven for 20 minutes, then remove the foil. Sprinkle with the remaining cheese.

  7. 7

    Return to the oven and bake until the cheese is melted, about 15 minutes more. Remove from the oven and let cool for 5 minutes before serving.