Put a large pot of water on to boil. Cook the macaroni for two minutes less than packet instructions - set aside.

Peel and finely chop the garlic. Melt the butter in a pan over a medium heat. Add the garlic and let it cook for one minute.

Add the flour and stir well.

Add the milk gradually, whisking all of the time. Continue stirring until the sauce thickens.

Remove from the heat and add the grated cheese and roule. Stir until melted.

In a large ovenproof dish, combine the macaroni and sauce. Crumble the bread into breadcrumbs and sprinkle over the top. Put under the grill on high until bubbling and golden, or in the oven at 200 degrees Celsius for 20 minutes until bubbling and golden.