3 Make sauce
Meanwhile, heat another pan over a medium heat. Add the olive oil and flour and cook, stirring, for 1 min or until a paste has formed. Increase the heat and gradually whisk in the stock and cook for 3-5 min or until thickened. Add the cheddar, garlic onion powder, mustard, cream cheese and half of the Parmesan. Whisk until smooth and season well.