I made these for a family bbq, I had so much to do and these could cook on their own, leaving Me the time I needed to do other things. Plus they are awesome! They go fast. My Grand kids love them. They ask for them every time we have a bbq.
On stove top in a large saucepan pour in BBQ sauce add jelly and cook on medium heat till jelly is completely melted into sauce, stirring often. Add the lemon juice. Pour the bottle beer into BBQ sauce container, swirl around to mix with remaining sauce in jar. Add to saucepan, continue cooking and stirring but lower the temp some. Add the salt and peppers. Cover and Cook for about 15 min on low heat. Taste to see if the seasonings are right for you, you may want more "heat".
Pour over meatballs and cover, Stir to cover all the meatballs. let it cook for about 6 hours, really depends on your slow cookers heat. You can leave them in slow cooker on low heat or you can skewer them on soaked wooden skewer sticks and toss on grill for a few min.