You'd need to walk 102 minutes to burn 365 calories. If you are not vegan, Greek yogurt or mayonnaise or a combination of the two work well. Dressing. So, in order to create the consistency desired to hold the tuna together I decided to add the yolk of a sunny-side up egg. The result was delicious and healthier than traditional tuna & mayo sandwiches! No-Tuna “Tuna” Salad Notes. Make it ahead. There are 365 calories in 1 small (7.5 oz) of Jerry's Subs & Pizzas Tuna Sub, without mayo. That's pretty steep for something people might mistake as low calorie or healthy. 540 calories for a 6 inch with no condiments or cheese. Visit CalorieKing to see calorie count and … I have also tried this recipe with my brother and his buds agreed! There are 323 calories in 1 Tuna Sandwich. As noted above, to keep this vegan, use vegan mayonnaise. I came up with this concoction one day when I was craving eggs and tuna and hand no mayo. Get full nutrition facts and other common serving sizes of Tuna Sandwich including 1 oz and 100 g. Dana Shultz, author of Everyday Cooking, also says you can use 2-3 tablespoons of additional tahini in place of the mayonnaise. Oh, and I looked into a subway tuna sandwich to see if it was relatively healthy.