IS IT PERMISSIBLE TO GIVE ZAKATUL-FITR AS CASH
It is most preferable that Zakatul-Fitr should be given as food rather than cash. Taking into consideration the motive behind the obligation; for the less privileged to also get something to prepare and feed on the Eid Day. Of course, giving money would have been quite the easiest adventure; but it is far from the reason behind the obligation. And there’s no single Hadith where the Prophet asked someone to give out cash in place of the food he ordered from the beginning.
The Hadith of Abdullahi Ibn Umar which we read earlier also didn’t mention a single point where they(the companion) gave out cash as Zakatul-Fitr. Instead, a variety of food products were mentioned.
Some scholars also gave advice on that. They said: if you realize that the one you are going to give the Zakatul-Fitr to has been given many already but even the money to turn the raw food into the eatable form is absent, you are at liberty to divide yours into two;half food and half cash with your sincere intention of not turning back from the Prophetic Teaching but to help the poor in having something in hand which probably could be used in turning the food with him/her.
In your own will also, you can give out the Zakatul-Fitr in food as that’s the normal way to do, then afterward you give some cash amount to the person as a Sadaqa(optional kindness) so he can use it to take care of the raw foods given to him and other self needs.
CAN YOU GIVE ZAKATUL-FITR MORE THAN THE OBLIGATED QUANTITY?
Zakatul-Fitr is like any other Obligatory-Zakat in its rules and regulations. The very quantity stated from the Prophetic Teaching as Sâ’an(measuring bowl) is what you are entitled to give. Any other thing besides that should be given as Sadaqa(a free will) but not Zakatul-Fitr.
The easiest way to understand the measure given as explained by the Scholars of Fiqh-Jurisprudence is; something that can keep a soul for a full day.
WHO IS ENTITLED TO ZAKATUL-FITR?
The question most people do ask is ; who should be given Zakatul-Fitr? Zakatul-Fitr is like any other Zakat and the ruling follows as such. Eight categories of people are entitled to Zakatul-Fitr. The list is given in the ninth Chapter of the Noble Qur’an. Allah said: “The alms are meant only for the poor and the needy and those who are in charge thereof, those whose hearts are to be reconciled, and to free those in bondage, and to help those burdened with debt, and for expenditure in the Way of Allah and for the wayfarer. This is an obligation from Allah. Allah is All-Knowing, All-Wise”. 
However,among the eight categories, it is most preferable to give to the first (poor) and second (needy) in order to fulfill the motive behind the obligation of Zakatul-Fitr. And whether or not Zakatul-Fitr can be given to a non-Muslim,is answered in the verse given earlier. To add more seasoning to the meal; though Zakatul-Fitr can be given to non-Muslims whose hearts are to be reconciled, in the presence of many needy Muslims it is preferable the Zakatul-Fitr is given to them so they wouldn’t be celebrating the Eid-ul-Fitr in the nothingness of something to feed on. Allah grants us understanding!
Finally, we are also advised to examine critically the condition of the one we are giving the Zakatul-Fitr to. Which is to say: if the person is so weak in strength and has no one to help him/her in turning the raw food if given,into the eatable form, you are then advised to cook the food and serve them in a quantity that can keep them for a whole day.
Allah is the Most Exalted and He Knows Best!!!
Allahumma salli alaa Muhammadin wa Alihii wa Sahbihii wa Sallim.