(Hint: the answer is a spoon)
I have a handle but I’m not alive.
I’m usually un-edible but I might be very sharp.
I’m found in a kitchen but not in a microwave
I can be used to eat things and to stab them too
I have more syllables the more times you say me
Even though it is not a fork
It sometimes helps you eat a meal
Even though it is not a bowl
It is used when you eat cereal
(From http://riddles-for-kids.org/spoon-riddles/ [<– not from 92 Spoons])