Preheat your oven to 400°F (200°C). Lay thick-cut bacon strips on a lined baking sheet and bake for 15-20 minutes until crispy.

In a mixing bowl, whisk together large eggs and milk, seasoning with salt and pepper. Heat a skillet with melted butter and cook the egg mixture until set, folding in the cheeses.

Preheat your oven to 350°F (175°C). Slice the Hawaiian rolls horizontally, place the bottoms in a baking dish, and layer with the egg mixture and crumbled bacon.

Mix melted butter, Dijon mustard, and garlic powder in a small bowl. Brush this mixture over the tops of the assembled sliders.

Cover with foil and bake for 15 minutes. Remove foil and bake for another 5-10 minutes until golden brown.

Let cool for a few minutes, slice into portions, and serve warm.