Using a sharp knife, trim the two ends of the onion.
1 onion
Place the onion flat-side down onto the cutting board and cut it in half.
Peel and remove the outer layer from both halves of the onion.
To cut into slices: Place one half of the onion cut-side down. Make cuts vertically into thin or thick slices. Repeat with the other half.
To dice an onion: Place one half of the onion cut-side down. Cut vertical slices that are parallel to each other, trying to keep the onion together as you go. Turn the sliced onion 90 degrees and make additional cuts that are perpendicular to the original cuts. Make cuts closer together for a finely diced onion and cuts further apart for a coarsely chopped onion.
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Notes
Storage DirectionsKeep cut onions in a sealed, airtight container in the fridge for up to to 10 days. Partially used onions can also be tightly wrapped in plastic wrap. Place cut onions in a freezer bag for 3-6 months and then add them directly to soups or other cooked dishes.Recipe TipsTo reduce crying while cutting onions, try these tips:
Chill the onions in the freezer for 10-15 minutes before cutting.