Clean the head of cabbage and core out the center. Put 1⁄2 of the stick of butter/margarine in the cored out cabbage.
Slice jalapeño pepper and put in cabbage center. Add 1 tablespoon Texas Rib Rangers Spicy Rub to cabbage center. Rub the remaining butter around the outside of the cabbage.In a small bowl combine the ingredients.
Press the rub into both sides of the meat and refrigerate for 1 hour prior to grilling to intensify flavors.
Wrap cabbage in heavy foil and place in smoker or grill. Cook until cabbage is soft to touch (about 2 to 3 hours depending of size of cabbage).
Remove from heat and check for tenderness. If not tender put back on heat and let it finish cooking. If tender remove and serve immediately.