Preheat your oven to 350ºF and grease a 9x13-inch baking dish with cooking spray.

Cook bacon in a skillet over medium heat until crispy. Once done, chop the bacon, leaving some of the drippings in the skillet.

Add the hash browns to the same skillet and cook until they're slightly browned. Transfer the hash browns to your greased baking dish.

Layer the cooked bacon and shredded cheddar cheese over the hash browns in the dish.

In a mixing bowl, whisk together eggs, milk, and the ranch seasoning mix until smooth. Pour this mixture evenly over the layered hash browns, bacon, and cheese.

Place the dish in the preheated oven and bake, uncovered, for about 55 to 60 minutes, or until the casserole is golden and set.

Serve warm and enjoy!