Prep all ingredients per the instructions above.
Preheat the oven to 350°F (177°C) for the chocolate chip cookies.
Prepare the cookies: In a medium bowl combine the flour, baking soda, and salt.
In a separate bowl, whisk the butter, granulated sugar, and brown sugar until creamy. Whisk in the vanilla and egg until fully incorporated. Gradually stir in the flour mixture until combined (over mixing will result in a harder cookie). Stir in the chocolate chips.
Optional: Refrigerate for 30 minutes or longer if desired to add more dimension to the flavor.
Equally drop dough balls onto a prepared baking sheet, spacing each one apart using a teaspoon.
Bake for 10 to 15 minutes. Cool for 5 minutes before serving.
For chewier cookies bake for 10 to 12 minutes; for crispier cookies bake for 15 minutes.
Assemble the Sandwich: Lay out the slices of white bread. Spread mayonnaise on one side of each bread slice. Layer with lettuce, bologna, mortadella, and cheese. Close the sandwiches with the remaining bread slices, mayonnaise side down. Cut in half.
Serve the sandwich with apple slices, a warm cookie and a glass of cold milk.