Preheat oven to 375° Fahrenheit. Spray large casserole dish with non stick cooking spray.
Cook bacon and rough chop. Set aside.
In large mixing bowl, toss together hashbrowns, bacon, sausage crumbles, bell pepper and 2 C cheddar cheese, making sure all the hashbrowns are broken apart. Pour into casserole dish.
In another large bowl, whisk eggs, half & half, Worcestershire, ground mustard, salt & pepper together until light and fluffy. Pour evenly over hash browns. Top with remaining grated cheddar cheese.
Bake in preheated oven for 40-45 minutes or until golden brown and set. Cool for 5 minutes & top with green onion before serving.