step 01In small bowl, whisk sour cream and mustard. Makes about ½ cup.
step 02Spread sour cream mixture on inside bottom halves of rolls; top with turkey ham, cheese and nopalitos. Spread outside top halves of rolls with 1½ tablespoons butter; close sandwiches.
step 03In batches if necessary, heat griddle or large skillet over medium heat; add sandwiches, butter side down, and cover with aluminum foil. Place second heavy skillet or pan over foil to press down on sandwiches; cook 4 minutes or until bottoms of sandwiches are golden brown.
step 04Spread tops of sandwiches with remaining 1½ tablespoons butter; turn sandwiches. Cover with foil and skillet; reduce heat to medium-low and cook 4 minutes or until bottoms are golden brown and cheese melts.
