Start by rounding up all your ingredients. Thaw that bag of frozen hash browns, so they’re easy to mix. Make sure your butter is melted and other components are ready to go. It'll save time and make the process smooth.

Set your oven to 350 degrees F (175 degrees C). While it's warming up, you can prepare the casserole. A preheated oven ensures that your casserole cooks evenly, transforming it into a delightful golden brown.

In a large mixing bowl, combine the thawed hash browns, shredded Cheddar cheese, condensed cream of mushroom soup, Greek yogurt, half of the melted butter, chopped onion, garlic powder, salt, and pepper. Stir everything together until you have a uniformly mixed blend. This is where the flavors start to mingle—don’t be afraid to really scrap the sides of the bowl to get all those goodies together!

Once your mixture is ready, pour it into a greased 9x13-inch baking dish. Spread it out evenly. Remember, it’s all about those layers! Use a spatula to make sure it’s smooth on top.

With your casserole spread in the dish, it’s time to sprinkle crushed cornflakes (or panko for a twist) over the top. Drizzle the remaining melted butter all over the cornflakes for that irresistible crunch. This topping adds texture and a touch of buttery decadence.

Pop your baking dish into the preheated oven and let it bake for about 1 hour to 1 hour 30 minutes. You’ll know it’s ready when the edges are bubbling, and the top has taken on a lovely golden hue. Keep an eye on it towards the end; we all know how ovens can vary!

Once out of the oven, let the casserole cool for about 10 minutes. Serve warm and enjoy with family and friends. Don’t be surprised if you get requests for the recipe—isn’t that the best compliment?