Heat your oven to 350 degrees. Place the prosciutto or bacon on a parchment lined baking sheet and let it bake in the oven for 10 minutes. Then let it cool before crumbling it.
While the meat is cooking, prepare the bread boat. Use a steak knife to cut the top of the bread, hollowing out the loaf of bread. Take the middle out, leaving the sides intact.
Then use an electric mixer to mix the eggs, cream, milk, cream cheese, garlic, salt, and pepper together. Start on a slow speed and then once the eggs are mixed in, increase the speed to high, letting the mixture get frothy.
Place the sliced sweet peppers and cheddar cheese inside the bread. Pour the egg mixture over. Top with the crumbled prosciutto (or bacon).
Place the bread boat on a parchment lined baking sheet and let it bake for 40-50 minutes, until the egg is solid.
Slice and serve.