Cheesy Sausage Rotini Casserole

Treat your family to the ultimate comfort food with this Cheesy Sausage Rotini Casserole, a hearty oven-baked dish loaded with bold Italian flavors. Perfectly al dente rotini pasta is smothered in a creamy marinara sauce infused with the savory richness of browned Italian sausage, sautéed onions, and garlic. This easy weeknight dinner is layered with a divine trio of gooey melted cheeses—mozzarella, cheddar, and Parmesan—for a golden, bubbly finish. Elevated with hints of Italian seasoning and optional red pepper flakes for a subtle kick, this casserole is a crowd-pleaser that’s ready in just under an hour. Garnish with fresh parsley for a bright, herbaceous touch, and serve this cheesy pasta bake hot for a satisfying meal the whole family will devour.

Nutriscore Rating: 54/100

Prep Time:20 mins

Cook Time:40 mins

Total Time:60 mins

Servings: 6

Ingredients

• 12 oz Rotini pasta
• 1 lb Ground Italian sausage
• 1 Yellow onion, diced
• 3 Garlic cloves, minced
• 2 cups Marinara sauce
• 1 cup Heavy cream
• 2 cups Shredded mozzarella cheese
• 1 cup Shredded cheddar cheese
• 1 cup Parmesan cheese, grated
• 1 tbsp Olive oil
• 1 tsp Salt
• 0.5 tsp Black pepper
• 1 tsp Dried Italian seasoning
• 0.25 tsp Red pepper flakes (optional)
• 2 tbsp Fresh parsley (for garnish)

Directions

Step 1

Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch casserole dish and set aside.

Step 2

Cook the rotini pasta in a large pot of salted boiling water according to the package instructions. Drain and set aside.

Step 3

In a large skillet, heat the olive oil over medium heat. Add the ground Italian sausage and cook until browned, breaking it apart with a spatula, about 7-8 minutes.

Step 4

Add the diced onion and minced garlic to the skillet with the sausage. Cook for 3-4 minutes, stirring occasionally, until the onion becomes translucent.

Step 5

Stir in the marinara sauce, heavy cream, salt, black pepper, Italian seasoning, and red pepper flakes (if using). Allow the mixture to simmer for 5 minutes.

Step 6

Remove the skillet from heat and stir in 1 cup of shredded mozzarella and 1/2 cup of Parmesan cheese until melted and combined.

Step 7

In a large mixing bowl, combine the cooked rotini pasta with the sausage sauce. Mix until the pasta is evenly coated.

Step 8

Transfer the mixture to the prepared casserole dish. Spread it out evenly.

Step 9

Sprinkle the top of the casserole with the remaining mozzarella cheese, cheddar cheese, and Parmesan cheese.

Step 10

Bake in the preheated oven for 20-25 minutes, or until the cheese is melted, bubbly, and slightly golden.

Step 11

Remove the casserole from the oven and let it rest for 5 minutes. Sprinkle with fresh parsley before serving.

Step 12

Serve warm and enjoy!

Nutrition Facts

Serving size	(2066.8g)

Amount per serving	% Daily Value*
Calories	5275.6

Total Fat 332.0g	0%
Saturated Fat 160.9g	0%
Polyunsaturated Fat 1.3g
Cholesterol 923.7mg	0%
Sodium 10046.2mg	0%
Total Carbohydrate 310.0g	0%
Dietary Fiber 18.9g	0%
Total Sugars 26.3g
Protein 234.7g	0%

Vitamin D 0IU	0%
Calcium 3668.3mg	0%
Iron 19.2mg	0%
Potassium 2323.4mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 57.8%

Protein: 18.2%

Carbs: 24.0%