the Breville Test Kitchen

the Smart Oven™ Air Fryer Compact
+1 more appliance
40 mins total time
25 mins active time
Easy
Serves 4
Measurements:
plus extra for cooking pasta
divided, plus extra for greasing
warmed
chopped, to serve
Bring a large saucepan of water to a boil over high heat and season well with salt. Add the pasta and cook for 1 minute less than the packet instructions. Drain and set aside. Meanwhile, continue to the next step.
Melt 1 oz of the butter and add to the breadcrumbs, stir to coat and set aside.
Grease a 8-inch square baking dish with softened butter.
To make the cheese sauce, melt the remaining 1 oz butter in a saucepan over medium heat. Add the flour and whisk constantly for 2 minutes, or until it bubbles. Gradually add the milk whisking constantly to prevent lumps. Add the thyme and reduce the heat to medium-low and cook, whisking for 5 minutes, or until the sauce boils and thickens slightly.
Remove the pan from the heat. Add ½ teaspoon salt, mustard powder, cayenne pepper and both cheeses. Whisk until the cheese has melted and the sauce is smooth. Remove and discard the thyme sprigs.
Insert the oven rack into position 3 Up. Set the oven to Roast & Bake, Super Convection, 400°F, for 10 minutes and press Start to preheat. Meanwhile, continue to the next step.
Add the pasta to the cheese sauce and stir until well combined.
Spread the mixture into the prepared dish and sprinkle with the crumbs.
Once preheated, place the dish in the oven and bake for 10 minutes.
The crumb topping should be golden brown. If not, press A Bit More. When it’s ready, remove from the oven and stand for 10 minutes.
Serve sprinkled with chives.