Slice slider rolls in half and place the bottom half of the rolls into a large cast iron skillet (or oven safe dish of your choice). Layer 1/3 Cup of the salsa on top, place one slice of the turkey over each roll, folded so it fits on top. Evenly distribute the cheese on top of each sandwich. Place the top of the rolls on.
In a small bowl, mix together the butter, onion flakes and remaining salsa. Pour on top of the rolls evenly. Bake for 20-25 minutes until the cheese is melted and the rolls are golden brown. Serve and enjoy!