Preheat oven to 350°F. Line the pie shell with parchment paper and fill with dried beans or pie weights and bake until lightly golden, about 20 minutes.
Remove parchment and beans or pie weights and set crust on a wire rack to cool while you make the filling.
Arrange tomatoes on a double layer of paper towels and sprinkle with salt. Allow to rest 10 minutes, then pat dry with another double layer of paper towels.
Layer tomatoes and basil in the pie shell, reserving some slices of tomato for the top of the pie.
In a small bowl, stir together the mayo, garlic, cheeses, and black pepper. Spread mixture over tomatoes.
Sprinkle the top with cracker crumbs and top with reserved tomato slices.
Bake until golden brown and bubbly, 40-45 minutes. Let rest 15 minutes before slicing and serving. Enjoy!