[header] How to make french onion dip [title] Add the oil, salt and onions to a pot. [step] Alternately, you can use a pan or a skillet. Make sure those onions are as thinly diced as possible if you want the dip to have a creamy, even texture. 
If you like the more lumpy consistency, though, then you can dice the onions a bit thicker. Cook on medium heat until the onions are caramelized (this should take about 20 minutes).