
Elevate a classic comfort dish by roasting the cauliflower first for a deeper, nutty flavor. Smothered in a rich, velvety Mornay sauce and topped with a golden cheese crust, this is the perfect side for any roast dinner.
Preheat your oven to 220°C (430°F) or 200°C for fan-forced ovens.
Place the cauliflower florets on a large baking tray. Toss with olive oil, sea salt, and pepper until evenly coated, then spread them out in a single layer.
Roast the cauliflower for 20 minutes without turning. The florets should be slightly firm but starting to develop some golden-brown color. Remove from the oven and reduce the oven temperature to 180°C (350°F).
Prepare the milk mixture by heating the milk and cream together in a small saucepan or in the microwave until hot but not boiling.
In a large saucepan over medium heat, melt the butter. Add the flour and cook, stirring regularly with a whisk or wooden spoon, for about 3 minutes to cook out the raw flour taste.
While whisking constantly, slowly pour in half of the hot milk mixture. Once the roux has dissolved and the mixture has thickened, stir in the remaining milk. Continue to stir over the heat for about 1 minute until the sauce is thick enough to coat the back of a spoon.
Turn off the heat but keep the pot on the stove. Stir in the cooking salt, nutmeg, and half of both the Gruyère and Red Leicester cheeses. Stir until the cheese is fully melted and the sauce is smooth.
Add the roasted cauliflower to the cheese sauce and toss gently to ensure every floret is well coated.
Transfer the mixture into a 2-liter (2-quart) baking dish (approximately 30 x 20 cm).
Sprinkle the remaining Gruyère and Red Leicester cheese evenly over the top.
Bake at 180°C (350°F) for 30 minutes until the cheese is bubbly, golden-brown, and the sauce is heated through.
Let the dish stand for 5 minutes to allow the sauce to set slightly. Garnish with fresh parsley if desired and serve hot.
For the best results, don't over-roast the cauliflower in the first step; it should still have a bit of bite so it doesn't turn mushy during the final bake. If you can't find Red Leicester, a sharp orange Cheddar makes an excellent substitute for both color and flavor.




