Preheat oven to 375°F (190°C). Steam or blanch broccoli florets until tender, about 5 minutes, then drain well.
In a large bowl, combine cottage cheese, eggs, garlic, onion powder, salt, pepper, and Parmesan. Stir in shredded chicken and broccoli.
Spread mixture evenly in a greased 9x13-inch baking dish. Top with shredded cheddar and breadcrumbs.
Bake for 25-30 minutes until bubbly, cheese is melted, and top is golden.
