Cauliflower Mac and Cheese

Ingredients:

Salt
1 pound short cut wheat pasta, such as macaroni, ziti or penne rigate
1 bag frozen cauliflower
3 tablespoons butter
1 onion, finely chopped
4 cloves garlic, finely chopped
3 tablespoons flour
About 2 1/2 cups skim milk
Freshly ground black pepper
Freshly grated nutmeg
3-4 sprigs fresh sage leaves, very thinly sliced
2 tablespoons Dijon mustard
1 cup sharp white cheddar cheese, divided
1 cup Gruyère cheese, divided
1 cup shredded Parmigiano Reggiano cheese, divided

Directions:

Preheat oven to 400°F.

Bring the water to a boil for the pasta. Salt the water and undercook the pasta by 2 minutes to allow for baking later.

While the water comes to a boil, heat the cauliflower in the microwave. If desired, cut the cauliflower into smaller pieces.

Over medium heat, melt the butter, then add the onion and garlic. Sauté for 3-4 minutes, until tender. Add in the flour and whisk for 1 minute. Whisk in the milk and season with salt, pepper, nutmeg and sage. When thickened, stir in the Dijon mustard and two-thirds of the combined cheeses.

Drain the pasta and add the cauliflower. Stir in the cheese sauce, transfer to baking dish and top with the remaining cheese.

Bake until brown on a baking sheet to catch the bubble-over. The casserole will take 40-45 minutes to heat through.

Adapted from rachaelray.com