Place the broth, onion, peanut butter, sweetener, lime juice and garlic, garlic in a 6 quart slow cooker and stir well to combine. Add the ribs and cook, covered, on low for 7 to 8 hours until the meat is tender and easily pulls away from the bone.
To create a thicker sauce, pour sauce into a saucepan and heat over high heat to a boil for 2 minutes while whisking or until thickened to your liking.
Serve ribs with sauce from the slow cooker. Garnish with green onion and pili nuts.
To reheat, place on a cookie sheet with edges and heat in 400 degree F oven for a few minutes or until warmed to your liking.