the Breville Test Kitchen

the Smart Oven® Air Fryer Pro
45 mins total time
30 mins active time
Easy
Serves 6-8
Measurements:
plus ½ tsp extra
base trimmed
divided
Bring a large pot of water to a boil over high heat. Once boiling, add the 2 tablespoons of salt to the water. Return to a boil, then add the cauliflower, floret-side down and boil for 5 minutes. Carefully remove from the water and place on a wire rack to drain. Meanwhile, continue to the next step.
Melt the butter in a medium saucepan over medium heat. Once melted, stir in the flour and cook for 5 minutes. Gradually whisk in the milk and bring to a boil. Cook for 5 minutes, or until the sauce has thickened, whisking occasionally.
Add the half the gruyere, half the parmesan, mustard powder, pepper, the extra ½ teaspoon salt and grate in some nutmeg. Whisk until the cheese has melted.
Insert the wire rack into position 7. Set the oven to Air Fry, Super Convection, 400°F, for 17 minutes and press Start to preheat. Meanwhile, continue to the next step.
Place the cauliflower into a 2¼ qt traditional braiser. Cover evenly with the sauce and sprinkle over the remaining gruyere and parmesan.
Once preheated, place the braiser in the oven and air fry for 17 minutes.
When the oven signals, set the oven to Broil, High, for 3 minutes and press Start.
The cauliflower should be golden brown and tender. If not, broil it a little longer.
Spoon the gratin straight from the braiser at the table for a rustic, family-style presentation. Serve warm alongside your Thanksgiving mains. It's especially good with roasted turkey or ham.