This Low Calorie Grated Egg Avocado Toast is just 185 calories (a far cry from the 450 calories the original recipe has!)I used low calorie toast (70 calories each) to make this recipe extra low in calories. I supplied you with a link to all the best low calorie toast options as well. Special Tip: If you don't have a microplane grater you can finely mince the egg instead.