While the shrimp are cooking, defrost the packet of cream cheese chive sauce in a cup of warm water. When defrosted, mix with cabbage, capers, and dill to combine to create slaw.
Towards the end of cooking, toast the buns in the oven for a minute. Arrange the bottom bun with sliced tomato, sliced red onion and a hearty scoop of slaw. Pile shrimp on top of the slaw and top with the top half of the bun.