Preheat your smoker or grill to 225°F. If you're using a grill, set it up for indirect heat.

Wash and dry the tomatoes. If using plum tomatoes, cut them in half lengthwise. If using cherry tomatoes, leave them whole.

Place the tomatoes in a bowl and drizzle them with olive oil. Sprinkle with salt and pepper, then toss to coat evenly.

Arrange the seasoned tomatoes in a single layer on a baking sheet lined with aluminum foil. Place the baking sheet in the smoker or on the grill. Close the lid and smoke the tomatoes for about 45 minutes, or until they are tender and slightly charred.

Once the tomatoes are smoked to perfection, remove them from the smoker and let them cool slightly. Chop them into small pieces and set aside.

Preheat your oven to 350°F.

In a large mixing bowl, combine the smoked tomatoes, diced mozzarella cheese, grated Parmesan cheese, minced garlic, mayonnaise, and sour cream. Mix until all the ingredients are well combined.

Taste the dip and adjust the seasoning with salt and pepper, if necessary. Remember, you can always add more, but you can't take it out!

Transfer the dip mixture to a baking dish, spreading it out evenly.

Place the baking dish in the preheated oven and bake for 20-25 minutes, or until the dip is hot and bubbly, and the cheese is melted and golden brown on top.

Once the dip is bubbling and irresistible, remove it from the oven and let it cool for a few minutes. Serve it up with your favorite dippers and watch it disappear before your very eyes!