Preparation:

Step 1: Cook the Bacon and Ground Beef

1. Cook the bacon: In a large skillet, heat over medium heat and cook the bacon strips until crispy (about 5-7 minutes). Once crispy, transfer to a paper towel-lined plate to drain excess fat. After cooling, crumble the bacon into small pieces and set aside.
2. Cook the beef: In the same skillet, add the ground beef and cook over medium heat until browned, breaking up the meat with a spatula. Drain any excess grease and set the beef aside.

Step 2: Make the Garlic Parmesan Sauce

1. Sauté the aromatics: In the same skillet, add olive oil and heat over medium heat. Sauté the diced onion for 2-3 minutes until softened, then add the minced garlic and cook for another 1 minute until fragrant.
2. Make the sauce: Sprinkle the flour over the onions and garlic, stirring constantly to form a roux. Cook for 1-2 minutes to eliminate the raw flour taste. Slowly add the milk and heavy cream, whisking to combine. Stir until the sauce thickens (about 5 minutes). Once thickened, add in the shredded Parmesan cheese and stir until fully melted. Season with salt and pepper to taste.

Step 3: Combine the Cheeseburger Sauce

1. In a small bowl, combine the ketchup, mustard, and Worcestershire sauce to make a tangy cheeseburger sauce.
2. Add the cooked ground beef and crumbled bacon to this sauce and mix until the beef and bacon are evenly coated.

Step 4: Assemble the Lasagna

1. Preheat the oven to 375°F (190°C).
2. In a 9×13-inch baking dish, spread a thin layer of garlic Parmesan sauce on the bottom of the dish.
3. Layer the lasagna: Place 3 cooked lasagna noodles on top of the sauce. Then, add half of the cheeseburger mixture, followed by half of the remaining garlic Parmesan sauce, and sprinkle generously with mozzarella and cheddar cheese.
4. Repeat the layers: Place another 3 lasagna noodles, the remaining cheeseburger mixture, more garlic Parmesan sauce, and a generous layer of mozzarella and cheddar cheese.
5. Top with noodles and cheese: Finish with a final layer of lasagna noodles, the remaining garlic Parmesan sauce, and top with the remaining mozzarella, cheddar, and Parmesan cheese.

Step 5: Bake the Lasagna

1. Cover the lasagna with aluminum foil and bake for 25 minutes. Then, remove the foil and bake for an additional 15-20 minutes, or until the cheese is golden brown and bubbly.
2. Let the lasagna rest for 10 minutes before slicing to allow the layers to set and make for cleaner cuts.