I used about half an onion and I just cut it into a few big pieces and then put them in the blender. I also cut the sugar a bit. A lot of the other catalina dressing don't have many spices, I like that this one did. I used it for our dinner salad last night and can't wait to use it again.
I thought this dressing was very good but the over-riding flavor is onion. Next time, I would grate only half a medium onion and then I think it would be perfect. It was easy to put together and I used a stick blender to blend it all together. It's better than store bought! Thanks for posting! Made for PAC Fall 2008.