A Guide to Onions Share Print In our handy onion guide, we show you how to shop, chop, saute and caramelize this super veggie. Plus, find out all about the different varieties, health benefits and other fun facts. Instant Expert!: How to Caramelize Onions more videos Prev Next 11/22 How to Caramelize Onions Now that you know which onions to buy and how to cut them, learn how to caramelize them in a snap! Up Next: What to do with 'em Get our best 30-minute dinner ideas now!