The Best Monte Cristo Sliders

Preheat oven to 350 degrees and place a piece of parchment paper in a 9x13 rectangle baking dish.
Cut the group of Hawaiian dinner rolls in half using a serrated knife so the tops are separated from the bottoms. Do not break the rolls apart into individual servings. You should have 2 large pieces of bread when you're done.
Mix mayonnaise and Dijon mustard together in a small bowl. Spread evenly over the top piece of bread.
Place 5 pieces of Swiss cheese on the bottom piece of bread, cutting one of the pieces in half to fit.
Layer sliced ham and sliced turkey on top of the Swiss cheese.
Top the meat with another 5 pieces of Swiss cheese, cutting one of the pieces in half to fit.
Place the tops of the rolls on the meat and cheese and carefully place all of the sliders in the baking dish.
Mix melted butter and eggs together in a small bowl. Brush the egg mixture over the rolls, making sure to get all of the tops coated.
Cover the baking pan with foil, tenting it so it doesn't touch the tops of the rolls, and bake at 350 degrees for 15 minutes.
After 15 minutes, carefully remove the foil and re-brush the rolls with any egg mixture that has fallen off the sides. Bake uncovered for another 10-15 minutes until the rolls are golden brown and the egg mixture is cooked.
Allow the rolls to cool slightly and then dust with powdered sugar. Use a metal spatula to cut the sliders apart and serve with warmed raspberry jam.