Keto Italian Sausage Macaroni Casserole

A hearty one-dish dinner featuring Italian sausage, tender macaroni, and melted cheddar cheese in a savory tomato base. This comforting casserole combines the rich flavors of seasoned sausage with creamy milk and tangy diced tomatoes, creating a satisfying meal perfect for busy weeknights or family gatherings. The dish bakes until the cheese is golden and bubbly, making it an ideal comfort food that appeals to both kids and adults.
Ingredients
Instructions
- 1
Preheat oven to 350°F
- 2
Cook macaroni according to package instructions and drain
- 3
Cook sausage in a skillet over medium heat until browned and drain excess fat
- 4
Combine cooked macaroni, sausage, diced tomatoes, milk, salt, and pepper in a large bowl and mix well
- 5
Transfer mixture to a baking dish and top with shredded cheddar cheese
- 6
Bake for 30 minutes or until cheese is melted and bubbly
- 7
Let cool for a few minutes before serving
Tips
Drain the diced tomatoes well to prevent the casserole from becoming watery during baking.
Let the sausage cool slightly before mixing with other ingredients to prevent the cheese from melting prematurely.
Good to Know
Cover and refrigerate for up to 3 days. Reheat in oven at 350°F until heated through.
Can be assembled up to 1 day ahead. Cover and refrigerate, then bake as directed, adding 5-10 minutes if needed.
Serve hot directly from the baking dish. Pairs well with a simple green salad or steamed vegetables.
Common Mistakes
Don't skip draining the sausage fat to avoid a greasy casserole
Avoid overcooking the pasta initially as it will continue cooking in the oven
Substitutions
Dairy-Free Swaps
General Alternatives
FAQ
Can I freeze this casserole?
Yes, wrap tightly and freeze for up to 3 months. Thaw overnight in refrigerator before reheating in a 350°F oven until heated through.
What if I don't have Italian sausage?
Ground beef, turkey, or pork work well as substitutes. Season with Italian herbs like oregano and basil for similar flavor.
How do I know when it's done baking?
The casserole is ready when the cheese is melted, bubbly, and lightly golden on top, typically after 30 minutes of baking.