Preheat oven to 375 degrees F.
Bake rolls for a few minutes, until golden brown. Set aside and let cool slightly. Then, hollow out the tops of each roll to form bowls.
Meanwhile, whisk together the eggs, milk and salt and pepper.
Lightly coat a large pan with cooking spray and scramble the eggs.
Once scrambled, add the cheese, bacon, avocado, tomato and green onions, gently folding them into the eggs.
Divide the mixture among the bread bowls, and enjoy with the optional toppings!