Creating these mouthwatering Reuben Sliders is a simple process when you follow these steps:

1. Preheat Oven: Start by preheating your oven to 350°F (175°C).
2. Prepare Baking Tray: Line a baking sheet with parchment paper or foil for easy cleanup.
3. Cut Slider Buns: Slice the slider buns in half horizontally without separating them completely to create a single piece.
4. Layer Corned Beef: Place half of the corned beef on the bottom half of the buns.
5. Add Sauerkraut: Layer the drained sauerkraut over the corned beef, ensuring an even distribution.
6. Sprinkle Cheese: Generously sprinkle the shredded Swiss cheese on top of the sauerkraut.
7. Drizzle Dressing: Spread thousand island dressing over the cheese, adding an extra dimension of flavor.
8. Top with Buns: Place the top half of the buns back onto the assembled ingredients.
9. Brush with Butter: Mix melted butter with Dijon mustard (if using) and brush the tops of the buns for added flavor.
10. Sprinkle with Seeds: If desired, sprinkle caraway seeds on top for added flavor and aroma.
11. Bake: Place the assembled sliders in the oven and bake for about 20 minutes, or until the cheese is bubbly and the tops are golden brown.
12. Slice and Serve: Remove from the oven, allow to cool for a few minutes, and cut into individual sliders.

By following these steps, you’ll have a fresh batch of Reuben Sliders ready to be devoured!