Pre-heat cast iron pan to medium. These work well on the BBQ too!
Roughly chop onion and jalapeño and throw it in your food processor. Pulse, Pulse, Pulse, until the onion and the jalapeño are finely chopped.
Using your hands gently combine jalapeño/onion mixture, meat, minced onion, parsley, and salt. The more you work the meat the tougher it will become so only mix until just combined.
Form patties, this mixture makes about six. Sprinkle with salt and pepper.
Once your cast iron is pre-heated add a swirl of olive oil. Then add burger patties.
When the patties are cooked half way through, flip and reduce the heat to medium low.
Add barbecue sauce to the tops of the burgers and then add a thin slice of cheese.
Cover cast iron with a lid and let burgers continue cooking, about 5-8 minutes.
Serve with your favorite fixings and Paleo Sandwich thins instead of a bun.