Begin by slicing the 12-pack of Hawaiian rolls in half.
Spread a layer of raspberry preserves on the bottom half of the rolls.
Layer on the turkey, ham, and Swiss cheese.
In a bowl, whisk together the butter, egg, Worcestershire sauce, Dijon mustard, and mayonnaise until well combined.
Spread this mixture over the top half of the rolls and place it on top of the assembled sliders.
Brush some melted butter over the top of the rolls.
Bake in the oven for 15 to 20 minutes until golden brown.
Once done, sprinkle a little powdered sugar on top and serve.
