In a large skillet over medium heat, brown the ground beef and chopped bacon, stirring until crispy, about 8–10 minutes. Add minced garlic and chopped onion, sautéing until softened and fragrant, approximately 3 minutes. Stir in marinara sauce and let it simmer on low for 10 minutes.

In a mixing bowl, combine ranch dressing with crumbled bacon until well mixed. Set aside.

Preheat your oven to 350°F (175°C). In a baking dish, spread a layer of meat sauce, then put a layer of lasagna noodles, followed by creamy sauce and mozzarella cheese. Repeat layers, finishing with noodles, meat sauce, and mozzarella.

Gently press down on each layer with a spatula to remove air pockets and ensure a compact structure.

Cover with aluminum foil and bake for 30 minutes. Remove foil and bake uncovered for another 10 minutes until cheese is bubbling and lightly golden.

Let lasagna rest for about 10 minutes before slicing, then garnish with chopped parsley and serve hot.