1Preheat oven to 375 degrees F (190 degrees C). Grease a 9x13-inch baking dish.
2Beat cottage cheese, butter, and eggs in a large bowl. Stir corn bread mixes into butter mixture until just moistened. Fold in broccoli, onion, and 1 cup Cheddar cheese. Pour batter into prepared baking dish and sprinkle with remaining 1/2 cup Cheddar cheese.
3Bake in the preheated oven until a toothpick inserted into the center comes out clean, 35 to 40 minutes. Cool in the baking dish for 10 minutes before slicing and serving warm.
Aluminum foil helps keep food moist, ensures it cooks evenly, keeps leftovers fresh, and makes clean-up easy.