Pour the tomatoes into a medium-sized baking dish, drizzle wioth the oil, a little salt and pepper to taste, and roast for 20-25 minutes or until they are bursting.
While the tomatoes are in the oven roasting prepare the sandwich base by slicing the bread in half and spreading some basil pesto on both sides of the bread. Add a few slices of Mozzarella cheese on the bottom slice.
4 focaccia bread , 8 oz fresh mozzarella, 2/3 cup pesto
Top with the roasted cherry tomatoes, a little spinach, and the top slice of bread.
1/2 cup spinach
Bake in the oven for 5-10 minutes or until cheese is melty.