Preheat the oven to 400 degrees.
Spray a 9 x 13 casserole dish with cooking spray and set aside.
Cook your pasta as directed. While pasta cooks, blend your cottage cheese in a blender until smooth texture is reached. (This step is optional but recommended! You can leave cottage cheese as is.)
In a large bowl, combine the cottage cheese, greek yogurt, ranch seasoning, hot sauce, and half of both cheeses. Mix well.
Add the cooked pasta and shredded chicken to the sauce mixture. Stir until chicken and pasta are coated.
Pour the pasta mixture into the casserole dish. Sprinkle the remaining cheese evenly across the top of the pasta.
Bake for about 15 minutes, or until the cheese is melted.
After cooking, top with green onions.
