Grilled Vegetable Panini

This panini is a throw-together and we each make our own a little different. So here's our ingredients... make one however you wish.
IngredientsThick, crusty, artisan bread - sliced
Roasted red pepper (peel the skin off though, after roasting)
Grilled zucchini (you can 'pan grill' these - just use a little olive oil)
Grilled eggplant
Grilled red onion
Basil pesto
Tomato
Fresh mozzarella
Balsamic Vinegar

** Spread a thick schmear of pesto on both sides of bread, layer with zucchini, eggplant, onion, red pepper and tomato (Kurt adds the mozzarella prior to 'grilling' - I like it cold)

Grill in panini maker until golden brown, add mozzarella and a splash of balsamic vinegar **

Serve with kettle chips and a pickle. And a limeade.