You can decrease the calories and sugar by using sugar-free ketchup and omitting the sugar or using a natural sugar substitute such as stevia, monkfruit, or erythritol.
Makes 18 slices. A serving is 3 slices.
Nutrition is calculated using ketchup with sugar and turbinado sugar. You can make this sugar-free by using a no-sugar ketchup and a pinch of stevia or other sweetener to taste.
Removing the sugar makes this zero points on Weight Watchers Freestyle program. With regular ketchup and sugar, it is 2 points.