Today lets learn a quick and easy way to chop an onion.
First, peel off all of the outer, crispy peel.
Your onion should now look like this



Make sure that you do NOT cut all the way through the onion
stop just before the root.

notice how I stop before going through the root

Now, with the onion laying down, make about 5 cuts the other direction. Again, do not go through the root end
This is what your onion should look like now
One more series of cuts and we will be done
Turn the onion a quarter turn and chop, slicing all the way through
Discard the root end
What you have left is a perfectly diced or chopped onion