Oh my goodness, these look good. I love caramelized onions anyway, but this combination with Swiss cheese and a big burger looks fantastic. I like that they used an English muffin for the bun–you get to taste more burger that way! lol
I love grilled burgers, but these are a step above! Great for your next barbeque or for a wonderful family dinner.
Click title for link at Prevention. (Can you believe a burger this great-looking is at that site?!)