Preheat oven to 425°F. Coat a pie plate or oven-safe skillet with nonstick spray.
In a medium bowl, combine hash browns, 1/2 teaspoon salt, and 1/4 teaspoon pepper. Toss to combine. Drizzle with the melted butter.
Press into the bottom of the prepared pie plate. Bake for 25 minutes or until golden brown around the edges. Remove from oven and reduce oven temperature to 350°F.
Meanwhile, whisk eggs together and set aside. In a medium bowl, combine sausage, cheese, and scallions.
Pour the eggs over the baked hash brown crust. Top with the sausage and cheese mixture. Return to the oven and bake an additional 25 to 30 minutes, or until the eggs are set. Cool 10 minutes before serving.