Preheat your oven to 350°F (175°C).
In a mixing bowl, combine the diced tomatoes, mozzarella, feta, Parmesan, minced garlic, chopped basil, olive oil, and a pinch of salt and pepper.
Transfer the mixture into a baking dish and spread it evenly.
Bake in the oven for 20-25 minutes, or until the cheese is melted and bubbly.
Serve the dip warm alongside the baguette slices for dipping. Enjoy!
