01 -
Bring salted water to boil and cook pasta until al dente according to package instructions. Drain and set aside.
02 -
Sauté onion in olive oil until translucent, add garlic, then brown ground beef. Drain excess fat and season with salt and pepper.
03 -
Heat heavy cream in a saucepan, gradually whisk in cheddar and mozzarella until smooth. Season to taste.
04 -
Mix pasta, beef, sauces, and cheese mixture in a baking dish. Top with extra cheese if desired. Bake at 375°F for 20 minutes until bubbly.