Preheat and prepare the cauliflower

• Preheat the oven to 200 °C and spray a baking dish with cooking oil spray.
• Bring a large pot of water to a boil, add the cauliflower florets and cook until just tender.
• Drain the cauliflower well in a colander and set aside.

Make the cheese sauce

• Warm the olive oil in a saucepan over medium heat and sauté the garlic until fragrant.
• Whisk in the gluten-free flour and cook briefly, then gradually pour in the milk while whisking until smooth.
• Add the nutmeg, salt, half of the black pepper and the chili flakes, then stir in most of the cheddar and the parmesan until melted.

Assemble the bake

• Arrange the drained cauliflower in the prepared baking dish.
• Pour the cheese sauce evenly over the cauliflower.
• Scatter the remaining cheddar over the top and season with the remaining black pepper.

Bake

• Bake until the sauce is bubbling and the top is golden.
• Let rest briefly, then sprinkle with the chopped parsley before serving.