In a skillet over medium-high heat, cook the ground beef until it is no longer pink. Sprinkle in the Montreal Steak Seasoning and stir to incorporate, creating a flavorful base for your dish.
Prepare the sourdough loaf by slicing it into cubes while keeping it attached at the bottom for structure. Add a layer of garlicky paste and sprinkle with half of the shredded cheddar cheese.
Spread the cooked beef evenly over the cheese layer, followed by a generous sprinkle of crumbled bacon. Top with remaining cheddar and white cheddar cheese, along with freshly ground black pepper for a touch of heat.
Bake your Cheeseburger Pull-Apart Bread in the oven at 375°F for 15-20 minutes, allowing the cheese to melt and the edges of the bread to crisp up. Serve piping hot and enjoy this delicious twist on a classic burger!