kraft macaroni and cheese

Question

dear rabbi my children wanted to know if the kraft macaroni and cheese is kosher. I explained to them how the cheese is not kosher.But then they asked - since it is powder form is it considered 'aino roy leachelah? I wasn"t sure the answer. When you have a moment if you could shed some light it would be greatly appreciated. Oh and they also wanted to know if you can by the box and throw out the cheese and just use the noodles. The ingreidents for the noodles look fine but I didn't think it would look right buying it if the cheese is not good. Thank you for your time.