One day prior, remove whole turkey from the refrigerator. Remove from package and pat dry with paper towels. Can also prepare lemon garlic butter.
To prepare flavored butter, place room temperature butter into a mixing bowl. Add the remaining ingredients and blend together.
Gently pull the skin from the breast portion of the turkey. Take a third of the butter and rub it over the breasts underneath the skin. Take another third and rub over the entire whole turkey.
Place back into the refrigerator covered and let sit overnight.
Preheat the smoker to 250°F. Remove turkey from the refrigerator and allow to sit for 20 minutes.
Place turkey on smoker. Melt the remaining Lemon garlic herb butter. Approximately every hour, baste the turkey breast with the melted butter.
Continue to baste every hour until the turkey breast reaches a minimum internal temperature of 165°F (approximately 7 hours), making sure to insert the thermometer in the thickest portion of the breast.
Allow turkey to rest for 10 minutes then carve the turkey. Place on a large platter and serve immediately.