1. Preheat oven to 400 F.
2. Cut the bread into cubes.
3. In a bowl, whisk together the egg, milk, cinnamon, and sweetener.
4. Once the mixture is fully incorporated, soak the cubed bread into it.
5. Put the soaked bread mixture into a ramekin.
6. Bake for 15 minutes.
7. Top with desired toppings (yogurt, fruit, maple syrup, etc.).
8. Enjoy!