This is the perfect comfort food that will bring back memories of childhood. It is missing the pasta but you won't miss it. I love the simplicity of this dish with everything thrown into the skillet.
Steam the cauliflower until fork tender.
Add the onions and garlic to the beef and cook until the onions are tender. Stir occasionally.
Bring the mixture to a simmer while continuing to stir. Once the mixture has begun to simmer, add the steamed cauliflower. Stir in 1/2 cup of the cheese.
When the cheese is melted, spoon into the prepared dish. Add the remaining cheese to the top of the casserole.