Tuna Toast Summary Just mix up the mayo with the tunaA straightforward snackWhich includes all of the daily vitamins B12, A, C and KComes in at 700 caloriesJust eat half if not ravenous2 Servings Ingredients Canned Tuna (1-can)Olives (12)Red Pepper (½)Mayonnaise (2 tbs)Spring Onions (4)Whole Grain Bread (2-slices)