1. Prepare the Meat Sauce: Start by cooking the ground beef in a large skillet over medium heat until browned. Add the diced onion and sauté until softened, about 4-5 minutes. Stir in the minced garlic and cook for an additional minute. Next, pour in the marinara sauce, crumbled bacon, Italian seasoning, and smoked paprika. Season with salt and pepper to taste. Allow the mixture to simmer for 10 minutes, then set it aside.

2. Make the Parmesan Garlic Béchamel: In a saucepan, melt the butter over medium heat. Whisk in the all-purpose flour and cook for 1-2 minutes to eliminate the raw taste. Slowly whisk in the milk, and continue cooking until the sauce has thickened, about 5 minutes. Stir in the grated Parmesan cheese and garlic powder. Season with salt and pepper to your liking, then remove the pan from heat.

3. Assemble the Lasagna: Preheat your oven to 375°F. In a 9×13 inch baking dish, start by spreading a layer of the prepared meat sauce. Top with a layer of cooked lasagna noodles, followed by a layer of the Parmesan garlic béchamel, mozzarella, and cheddar cheeses. Repeat these layers until you reach the top of the dish, finishing with the cheese layer.

4. Baking the Lasagna to Perfection: Cover the lasagna with foil and bake for 30 minutes. Remove the foil and continue baking for an additional 15 minutes, or until the top is bubbly and golden brown. Once out of the oven, let the lasagna rest for 10 minutes before slicing and serving.