Preheat oven or toaster oven to 375 degrees. 2. Use fingers to flatten the center of the bread and press out towards the crust to create a boat. 3. Toast bread in the oven for 4 minutes or in a toaster until lightly golden. 4. Place bread on a baking sheet and layer slices of tomato and avocado in the toast boat and top with mozzarella. 5. Whisk egg in a bowl with 1 teaspoon water. 6. Pour egg slowly over cheese and bake for 12-14 minutes or until eggs are set and crusts are golden.