Preheat the Oven: Initiate by setting your oven to a temperature of 350 degrees Fahrenheit to ensure it is adequately heated for cooking.
Prepare the Sausage: Utilize a skillet set over medium-high heat to cook the sausage until it is thoroughly browned. Following cooking, ensure to drain any excess fat from the skillet.
Combine Sausage and Cream Cheese: In a separate mixing bowl, amalgamate the browned sausage with the softened cream cheese until the mixture is uniform.
Cook the Hashbrowns: Return to the skillet to sauté the hashbrowns. Continue cooking until they begin to acquire a slightly browned appearance.
Assemble the Base Layer: Grease a 9x13 inch baking dish and evenly distribute the hashbrowns across the bottom as the first layer.
Add Meat and Cheese Layers: Proceed by layering the cream cheese and sausage mixture over the hashbrowns. Subsequently, sprinkle the shredded cheddar cheese evenly over the top.
Prepare the Egg Mixture: In a bowl, whisk together the eggs, milk, garlic powder, onion powder, and season with salt and pepper according to your preference. This mixture will bind the ingredients in the casserole.
Combine and Bake: Pour the prepared egg mixture over the layered ingredients in the baking dish, ensuring it permeates through the layers. Place the dish in the preheated oven and bake for 40 to 50 minutes, or until the casserole is fully cooked and the surface is golden brown.