I usually cook the chicken first by boiling or lightly sautéing it with salt and pepper. Once done, shred it into small pieces for easy layering. Keeping the chicken moist is important for a juicy lasagna.
In a pan, melt butter and sauté garlic and onion until soft. Add flour and cook briefly, then slowly whisk in milk to avoid lumps. Cook until the sauce thickens into a creamy consistency.
Now I add salt, pepper, oregano, and chili flakes to the sauce. Stir well and let it simmer for a few minutes so all flavors blend together. Taste and adjust seasoning as needed.
Start by spreading a thin layer of white sauce in your baking dish. Add lasagna sheets, followed by chicken, sauce, and cheese. Repeat this layering process until everything is used.
Top the last layer with generous mozzarella and parmesan cheese. This creates a golden, bubbly crust after baking. I always make sure the top is evenly covered.
Bake in a preheated oven at 180°C (350°F) for about 30–35 minutes. The cheese should be melted and slightly golden on top. Let it rest for a few minutes before slicing.