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Italian Sausage Pasta Bake

Italian Sausage Pasta Bake

This hearty Italian sausage pasta bake combines al dente pasta with flavorful Italian sausage, colorful vegetables, and a rich tomato sauce, all topped with a golden blanket of melted cheese. Ready in 45 minutes and perfect for feeding a crowd, it's a comforting weeknight dinner that tastes even better as leftovers.
Prep Time 15 minutes
Cook Time 30 minutes
Course Dinner, Main Course
Cuisine American, Italian
Servings 6

Ingredients
  

  • 1 pound Italian sausage casings removed (sweet, hot, or a mix depending on your spice tolerance)
  • 1 medium onion diced
  • 3 cloves garlic minced
  • 1 red bell pepper diced
  • 8 oz mushrooms sliced (optional but recommended)
  • 1 teaspoon dried Italian seasoning
  • ¼ teaspoon red pepper flakes optional
  • 1 jar 24 oz marinara sauce
  • ½ cup chicken broth
  • 12 oz pasta penne, ziti, or rigatoni work best
  • 2 cups shredded mozzarella divided
  • ½ cup grated Parmesan cheese
  • ¼ cup fresh basil chopped (plus extra for garnish)
  • Salt and pepper to taste
  • 2 tablespoons olive oil divided

Instructions
 

  • Preheat your oven to 375°F (190°C). While that's happening, bring a large pot of salted water to a boil for your pasta.
  • Cook the pasta for TWO MINUTES LESS than the package directions state. You want it very al dente (almost crunchy) since it will continue cooking in the oven. Drain and toss with 1 tablespoon of olive oil to prevent sticking. Set aside.
  • Brown the sausage in a large skillet over medium-high heat, breaking it up with a wooden spoon as it cooks. This should take about 5-7 minutes. Don't rush this step—those caramelized bits are pure flavor.
  • Add the onion and bell pepper to the sausage and cook for another 3-4 minutes until they start to soften.
  • Toss in the mushrooms (if using) and cook for 2-3 minutes until they release some moisture and begin to brown.
  • Add the garlic, Italian seasoning, and red pepper flakes, and cook for another 30 seconds until fragrant. Your kitchen should smell amazing right about now.
  • Pour in the marinara sauce and chicken broth, stirring to combine everything. Let it simmer for about 5 minutes to bring the flavors together.
  • Remove from heat and stir in the cooked pasta, 1 cup of mozzarella, ¼ cup of Parmesan, and the fresh basil. Season with salt and pepper to taste.
  • Transfer everything to your baking dish and spread it out evenly. Top with the remaining cup of mozzarella and ¼ cup of Parmesan.
  • Bake uncovered for 20-25 minutes until the cheese is bubbly and starting to brown in spots. If you want an extra golden top, broil for the last 2-3 minutes (but watch it like a hawk—the difference between "beautifully browned" and "charcoal" is about 37 seconds).
  • Let it rest for 5 minutes before serving. This cooling time isn't just to prevent mouth burns—it also allows the sauce to thicken and the flavors to settle.
  • Garnish with additional fresh basil and serve hot, preferably with garlic bread for sauce-mopping purposes.

Notes

  • The pasta will continue cooking in the oven, so it's crucial to undercook it initially. Nobody wants mushy pasta!
  • For extra flavor, add a splash of red wine when you add the marinara sauce.
  • This dish is very adaptable—feel free to add spinach, zucchini, or any other vegetables you need to use up.
  • A dollop of ricotta cheese nestled into the pasta before baking adds a luxurious creamy element.