Preheat and prep: Heat your oven to 375°F (190°C). Lightly oil a 9x13-inch baking dish or similar casserole pan.
Season the chicken: Pat chicken dry.
Cut into bite-size pieces or keep as whole cutlets. Toss with oil, 1/2 teaspoon salt, 1/2 teaspoon pepper, garlic powder, and onion powder. Spread evenly in the baking dish.
Blend the sauce: In a blender or food processor, add cottage cheese, cream cheese, buffalo sauce, and ranch seasoning.
Blend until completely smooth and creamy. Taste and adjust salt or buffalo heat as needed.
Add mix-ins (optional): If using celery, riced cauliflower, or cooked quinoa, scatter over the chicken. Pour the cottage cheese buffalo sauce over everything and stir gently to coat.
Top with cheese: Sprinkle shredded cheese evenly over the top.
If you like, dot with blue cheese crumbles for extra tang.
Bake: Cover loosely with foil and bake for 20 minutes. Remove foil and bake another 10–15 minutes, until the chicken is cooked through (165°F/74°C in the center) and the sauce is bubbling.
Finish and rest: Let the bake rest for 5–10 minutes to thicken. Drizzle with a little extra buffalo sauce, sprinkle green onions and parsley, and add a few dollops of ranch or blue cheese dressing if you like.
Serve: Scoop into bowls.
Pair with a crisp salad, roasted broccoli, or carrot and celery sticks for that classic buffalo vibe.