You can either boil the cauliflower or roast it in the oven. Pick your favorite cooking method.Boiled: Cut the cauliflower into florets, then boil it in a large pot with lightly salted water until fork-tender (about 10 - 15 minutes). Drain it and set aside.
Roasted: preheat oven to 400°F or 200°C. Arrange florets on a baking sheet lined with parchment paper, season with olive oil and salt, and bake for 30 minutes, or until slightly charred and fork tender.
MAKE THE CHEESE SAUCE
In a saucepan, melt the butter, then add the flour and whisk for 1 minute or until it starts to bubble.
Add the milk and stir on medium heat until the sauce thickens.
Turn the heat off, then add salt, blackpepper, gratednutmeg, and shreddedcheese.
Stir until the cheese is fully melted in the sauce. Taste sauce and adjust.Tip: if you can't get the cheese to melt fully, you can blend the sauce with an immersion blender, or in a regular blender.
BAKE THE DISH
Preheat the oven to 350°F or 180°C. Transfer cauliflowerflorets onto a baking dish (11x8-Inch or 28x20cm).
Pour the cheese sauce over the cauliflower, and move the florets around so that the sauce goes into all nooks and crannies.
Sprinkle the grated parmesan on top.
Bake at 350°F or 180°C for 10 minutes, then set the oven to broiler function and gratin for 5 more minutes, or until the cheese on top melts and turns golden brown.
Serve as a main dish or as a side.
Nutrition information is an estimate for one serving of cauliflower mac and cheese out of eight servings.SUBSTITUTIONS- Cheddar: substitute fontina + parmesan, or gruyere + parmesan, or Colby + pecorino romano, or Monterey Jack + Parmesan.- To make it vegan: substitute vegan shredded cheese + 4 tablespoons of nutritional yeast + more salt to taste for the cheddar. Substitute unsweetened plant milk for milk, and vegan butter for butter.- To make it gluten-free: substitute cornstarch for flour.MAKE AHEAD & STORAGE- Make ahead: cauliflower mac n cheese is a good recipe for meal prep because it keeps well in the fridge for a few days, and you can even freeze it.Also, if you have people over, you can assemble the dish up to a day in advance and keep it in the fridge wrapped in plastic. Then, bake it a bit longer if it comes from the refrigerator.- Refrigerator: keep leftovers in an airtight container in the fridge for up to 4 days.- Freezer: let it cool down completely, transfer it to a freezer-friendly container, and freeze it for up to 3 months.- Thaw: defrost over several hours in the fridge.- Reheat: reheat in a preheated oven at 400°F or 200°C for 10 -15 minutes or in the microwave for 2 minutes.TOP TIPIf your cheese struggles to melt in the sauce, you can blend the mixture with an immersion blender or in a regular blender to make it velvety smooth.