Step 1

Identify the top and the root ends of the onion.

Step 2

Slice off the top of the onion. Keep the root end in tact.

Step 3

Lay the onion on a cutting board with the root side up and slice vertically right through the root, creating 2 halves.

Step 4

You can now easily peel back the skin.

Step 5

Place the onion, flat side down, and make vertical cuts, about ¼″ apart, but not all the way to the root of the onion. Keep the root end in tact by about ½″.

Step 6

Now cut crossways to the previous cuts, and the diced pieces will fall away.

Complete!

Congratulations! You now have diced onion. Continue with other half if necessary, or seal in an air tight bag for later use.