1-First, preheat your oven to 350°F and grease a 13×9-inch baking dish to ensure easy removal later. This step takes just a moment and sets the stage for even baking. Cooking preparation generally only needs about 15 minutes before you pop it in the oven.

2-Next, cook the 1 pound of diced sliced bacon and 1 medium chopped sweet onion in a skillet over medium heat until the bacon is crisp. Be sure to drain the grease thoroughly to avoid sogginess and maintain a nice texture. Once done, set this flavorful mixture aside.

3-In a large bowl, combine the 6 large lightly beaten eggs (or 1 cup liquid egg substitute), 4 cups thawed frozen shredded hash brown potatoes, 2 cups shredded cheddar cheese, 1 ½ cups 4% cottage cheese, and 1 ¼ cups shredded Swiss cheese with the bacon-onion mixture. Stir everything well to distribute the flavors evenly.

4-Transfer the combined mixture to the greased baking dish, spreading it out smoothly. Bake uncovered for 35 to 40 minutes, or until a knife inserted in the center comes out clean. After baking, let the casserole stand for 10 minutes to set, which helps it hold its shape when serving.