01 -
Preheat the oven to 175°C (350°F).
02 -
In a large skillet, heat olive oil over medium-high heat and sauté diced onions for 2 to 3 minutes until translucent.
03 -
Add ground beef to the skillet and cook until no longer pink, breaking it apart with a spatula.
04 -
Drain excess grease from the cooked beef, then season with Montreal steak seasoning. Stir in ketchup, mustard, and dill relish until fully incorporated.
05 -
Slice Hawaiian rolls horizontally and place the bottom halves in a 33x23 cm (9x13 inch) baking dish.
06 -
Layer 5 slices of American cheese over the bottom rolls, followed by the ground beef mixture and crumbled bacon. Top with remaining 5 cheese slices, then place the top halves of the rolls over the layers.
07 -
Cover the baking dish with foil and bake for 15 to 20 minutes until the cheese is melted and bubbly.
08 -
Remove from oven, slice sliders if needed, and serve warm. Optionally, add additional toppings or burger sauce as desired.