Combine first 11 ingredients in a food processor and make a thick sauce. Reserve 1/4 cup of the sauce in the refrigerator for serving with the hens later.
Remove the backbone from the hens so that you can butterfly them. Season the hens all over with salt and pepper; poke a few holes into the meat so the marinade can penetrate the bird.
Rub 1 cup jerk sauce all over the hens in a large bowl or pan. Then, cover and let marinate in the refrigerator for 2 to 4 hours.
Safety goggles are recommended when chopping habaneros or scotch bonnet peppers. First off, chopping will make your nose run, you will use your arm to wipe your nose and the next thing you know you have rubbed chili juice into your eyes! No bueno!!