Preheat oven to 350 degrees. Slice 1/4 inch off the top of the bread, and hollow out bottom, discarding the crumb (soft interior) of the loaf. Cut top into 1-inch pieces, and set aside.
In a medium bowl, whisk together eggs, zest, milk, parsley, and Parmesan. Season lightly with salt and pepper. Stir in 1/2 cup bread pieces.
Place hollowed-out bread on a parchment-lined baking sheet. Place prosciutto slices along inside of bread to cover. Slowly pour egg mixture to the brim. Bake until eggs are puffed up and cooked through, 30 to 33 minutes.
Slice into 2-inch pieces. Serve immediately.
I'd like to try a vegetarian version of this, but do you think the prosciutto is necessary to prevent the bread from getting soggy?
Holy Cow this is genius! Made it for Sunday brunch with cibatta and a black forest ham (not trying to deviate, just what I had on hand)...to die for
! I will make this again and again. super easy and super delish!