Spread a little olive oil and some chopped garlic on slices of bread.
Make incisions into the chicken breasts, using chopsticks either side to make sure you don't cut through the breast entirely. Add thin slices of mozzarella and chopped cherry tomatoes into the incisions. Season with salt and pepper and a drizzle of olive oil.
Add spinach leaves onto the slices of bread, then place a stuffed chicken breasts onto each slice. Place them on a baking tray lined with baking paper.
Sprinkle grated parmesan over the top and bake at 190°C for 30 minutes. Enjoy hot.