Prep all ingredients per instructions above.
Make Cucumber Water: In a pitcher, combine the sliced cucumber and water. Refrigerate until ready to serve.
Preheat a panini press or a grill pan over medium heat.
Assemble the Panini: Spread mayo and mustard on the inside of each sandwich thin. Layer with turkey, apple slices, cheddar cheese, and arugula. Top with the remaining sandwich thin.
Grill the Panini: Place the assembled panini onto the preheated panini press or grill pan. Cook for about 3-4 minutes, or until the bread is golden brown and the cheese has melted.
Serve the Meal: Cut the turkey panini in half. Serve with chips, pickle, and cucumber water.
Prepare the Banana Split (optional): Place two banana slices in a dish or bowl. Add ice cream between the banana slices. Drizzle with chocolate syrup and sprinkle with chopped nuts. Top with whipped cream and a maraschino cherry.