Preheat the oven to 350 degrees Fahrenheit. Line a 9x13 pan with parchment paper.
Slice the Hawaiian rolls in half through the middle, but keeping them connected if possible. Lay the bottom half of the rolls on the baking pan. 1 Package Hawaiian Rolls
Spread the Thousand Island dressing over the bottom half of the rolls. 1/3 cup Thousand Island
Spread the corned beef slices on top of the rolls. 12 oz Sliced Corned Beef
Spread the sauerkraut evenly over the top corned beef. 1 cup Sauerkraut
Spread the sliced cheese over the top of the sauerkraut. 9 Slices Swiss Cheese
Add the top of the buns back on top.
Stir together the melted butter, poppy seeds, onion flakes, and garlic powder in a small bowl. 3 TBS Melted Butter, 1 tsp Poppy Seeds, 1 tsp Onion Flakes, 1/2 tsp Garlic Powder
Brush the butter mixture evenly over the top of the slider buns, coating all the corners and sides.
Bake the slides in the preheated oven for about 20 to 25 minutes, until the cheese is melted and the rolls are golden brown.
Cut into sliders and enjoy!