A made from scratch burger recipe I created a few summers ago, always a hit! You can adjust the ingredients as the recipe change slightly each time I make it.
Gently combine ground pork, beef, Panko, Worcestershire, liquid smoke, parsley, onion, chopped bacon (optional).
Make into roughly golf ball size balls (maybe a little larger)
Flatten into a Patty try to keep it as thick as possible depending on preference of course
Press down the middle a bit, creating an indent (this help the burger cook evenly) and put on about a tablespoon (maybe a pinch more, I try and pack as much as possible because I love melty cheese)
Take a second ball and press into a Patty, put on top of the cheese and pinch the Patty's together. (tip: I also roll and press the sides in, to make it look like a normal patty)
Let Patty's rest at room temp for approximately an hour.
Light BBQ and put on full heat let the grill heat up.
Grill the burgers on high, until done. (I usually wait until the cheese starts oozing out a little)