Preheat the oven to 350 degrees. Spray a 9x13 baking dish with nonstick spray. In a pan on medium high heat, cook the 1 package of diced bacon and 1 diced medium onion until crisp. Set aside.

In a blender or food processor, whip the 1 ½ cups cottage cheese until smooth. Cottage cheese will be thick.

In a large bowl, beat the 6 eggs then add the whipped cottage cheese and whisk together until combined.

Add the remaining ingredients to the bowl: 4 cups hash browns, bacon and onion mixture, 2 cups shredded cheese and 1 cup mozzarella cheese. Mix everything together until combined.

Pour mixture into a greased 9x13 baking dish and spread out evenly. Bake at 350 degrees uncovered for 35 minutes. Remove from the oven and sprinkle another ½ cup to 1 cup of shredded cheddar cheese on top of the casserole and then place back in the oven for 5 minutes or until the cheese on top is melted.

Remove from the oven and let sit for 5 minutes before serving.