Spread the mayonnaise over each slice of bread. Place a piece of lettuce onto one slice and top it with the turkey, tomatoes, and the remaining lettuce and bread. Butter both sides.
In a medium non-stick pan, grill the sandwich for 2 minutes before flipping and grilling an additional 2-3 minutes, or until both sides are golden and crisp.
Remove the sandwich from the pan, and allow it to cool down to room temperature before cutting it in half.
Pack for lunch:
Place it into a lunch container with the fruit and veggies, making sure to pack everything in separate compartments, so the bread stays toasty.
Close the lunchbox and pack it into a lunch bag with an ice pack.
Notes
Nutrition information is calculated without veggies and fruit.