Take out the turkey breast, trim any excess fat or skin, and wipe clean of excess slime/residue. Next, Inject the breast in several spots with the Texas butter, distributing as evenly as possible (Note: If you’re not injecting, save this to add to the breast later or dip with when finished). Next, season the turkey liberally with your BBQ rub of choice, ensuring it contains a salt component to help brine the meat. Place the turkey in the fridge for 2-3 hours.
Preheat the smoker to 225 degrees (depending on the size of your smoker, it may be best to do this while you’re prepping the turkey in step 1). Once the smoker is ready, add the turkey breast. I like to place the breast on a wire rack to make transporting easier. Let the turkey cook until the internal temperature registers 130-140 degrees. Once this happens, remove the turkey from the smoker.
Place the turkey breast on a large sheet of foil (presentation side up), folding up the sides to prevent liquid from spilling. Pour half the remaining butter onto the turkey, flip it over, and pour the rest. Wrap tightly with the foil and place it back on the smoker presentation side down (either way works, but this way, the turkey looks better for the final presentation). Note: If you did not inject with the Texas butter in step 1, only add ½ C of the butter mixture at this stage. Keep the rest for dipping.
Let the turkey breast keep cooking until it registers 160-162 degrees. At this point, remove it from the smoker and allow it to rest, still wrapped, for at least 20 minutes (Carryover cooking will take the turkey up to 165 degrees internally).
Finally, remove the turkey from the foil, slice it, and serve with the Texas butter and sides of choice. Enjoy!