Preheat the oven to 325 degrees F (165 degrees C).

Stir onion, roasted red peppers, whiskey, and garlic together in a bowl. Place mixture inside turkey cavity. Mince chipotle peppers in a food processor until about the consistency of spaghetti sauce. Rub 1/2 of the chipotles on the outside of the turkey, and place the rest inside the cavity. Place turkey into a roasting bag, close the bag according to the directions, and place into a roasting pan.

I recommend making the turkey a day in advance. Then you can chop the turkey into chunks, put it into a crock pot and fill the remaining space with the turkey broth. Heat on Low until heated through, about 2 hours.