Preheat your oven to 350 degrees Fahrenheit and grease a 9×13-inch casserole dish.
Start by sauteing the onion in the butter until tender and translucent in a large skillet. Then add the chicken to cook.
Stir in the soup, milk, mushrooms, and basil, simmer for 5 minutes and then set aside.
Layer 1/2 lasagna noodles into a dish, top with cottage cheese, chicken, cheddar cheese, the mushroom mixture from before, and Parmesan cheese. Repeat. Bake for around 45 minutes, then remove from oven and allow to cool for 10 minutes.