Step 1

Wash and dry produce.

Step 2

Slice mozzarella and tomato into ¼-inch-thick rounds. Season tomato with salt and pepper. Halve ciabatta; toast until golden if desired.

Step 3

In a small bowl, combine pesto and mayonnaise; spread onto cut sides of ciabatta. Fill with tomato, prosciutto, and mozzarella.

Step 4

Halve sandwiches on a diagonal, divide between plates, and serve.