maleficent

Diced onions and mushrooms give off a lot of liquid, that might be the reason for your burgers falling apart... You might try cooking the onions and 'shrooms first to get the liquid out of them...

I personally don't like bread or egg in burgers, that gives it a meatloaf texture to it that I just don't like, just the meat and maybe a shot or three of worcestishire sauce....

You want to handle the burger as little as possible, too m uch handling can toughen it...

You also want your beef to not be super lean eithh... (I usually go with the 85 percent lean to not have it dry out)

Move the burger very little when it's on the grill or in the pan.

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