Coat a 2-quart square baking dish with nonstick cooking spray. Arrange hash browns evenly in the bottom of the dish. Sprinkle cheese, ham, and green onions over hash browns.
In a bowl combine eggs, milk, salt, pepper and jalapenos. Pour egg mixture over hash brown mixture in dish.
Bake, uncovered, in a 350° F oven for 50 to 55 minutes or until a knife inserted near the center comes out clean.
Let stand 5 minutes before serving. Makes 6 servings.