Warm ham and cheese sliders with a buttery glaze are a crowd-pleasing family appetizer or quick dinner. Easy to assemble and packed with protein, these mini sandwiches vanish fast at any gathering.
Preheat oven to 350°F, and lightly grease a 9x13-inch baking dish for even browning and easy cleanup.
Slice slider buns horizontally (keeping tops and bottoms connected) and layer the bottom halves in the dish.
Distribute sliced ham evenly on the buns, then layer Swiss cheese slices atop the ham to ensure full coverage.
Place the bun tops over the cheese, and in a small saucepan melt butter over low heat. Stir in Dijon mustard, brown sugar, poppy seeds, and garlic powder until smooth.
Brush the buttery glaze generously over the top buns, covering every edge. Bake uncovered for 18–22 minutes until tops are golden brown and cheese is fully melted (do not overbake to prevent dryness). Let cool for a couple minutes, then slice and serve warm.