These Low Calorie Torta Sandwiches are just 262 calories and have 22.2g of protein. I was able to keep the calories low by using my low calorie burger buns, and my low calorie mayonnaise. But you can go a bit more traditional if you prefer with these tips:Tips on Buns: The traditional telera or bolillobuns will also work, just slice in half and hollow out 1/3 of the inner part of the buns to cut the calories. Tips on Mayo: You can skip the mayo, swap it for smashed avocado, or just use Greek Yogurt (it tastes just like sour cream!)