Put the minced meat in a medium bowl. Cut the onion into small cubes with a paring knife and add it together with Worcestershire sauce, BBQ sauce, egg, salt, pepper and, if necessary, chilli sauce. Add the parmesan and breadcrumbs. First mix everything with a tablespoon. Then knead the mass with your hands for about 7 minutes (I wear disposable gloves).
Weigh the total mass and divide the value by the number of burger buns to find the amount for the individual burger patty. Now make burger patties with a burger press, then carefully slide them onto the baking paper with the help of a small knife.
Tip: You can now store the burger patties in the refrigerator for a few hours before the burgers are to be fried.
I then use a coated pan and fry the burgers with a little neutral vegetable oil (e.g. rapeseed oil) at medium temperature. Depending on the size, the roasting time is 3 - 5 minutes per side.
For cheeseburgers, place the cheese on top of the burger patty after turning. Then the burger as you like z. Cover with tomatoes, onions, lettuce, etc.