These burritos are completely bespoke as you can add any selection of filling ingredients you like, such as leftover roast chicken, ham, cured meats, black beans, olives, smoked salmon, sour cream, fresh or roasted peppers, chives, coriander and cheese. You really can suit yourself and have a different combination every time. Just keep the base of the egg and tortilla the same.
Tip: These aren't just for breakfast! They make great lunchbox fillers too. Try a different flavour combo for each day of the week (see the intro).
If you're keeping an eye on your fat intake, you could leave out the avocado.