An average of 4.2 out of 5 stars from 6 ratings These 4-ingredient air fryer cookies couldn’t be easier to make. All you need is some chocolate hazelnut spread, milk, flour and some white ...

Some say that using cold milk in a hot roux gives the sauce more time to absorb the liquid and will result in fewer lumps. Others advocate hot milk to help melt the roux. The choice is yours.