Tomato and Roasted Garlic Pie

Ingredients

• pounds mixed heirloom tomatoes, cored, sliced thick
• tablespoons extra-virgin olive oil
• teaspoon kosher salt, divided, plus more
• teaspoon freshly ground black pepper, plus more
• garlic cloves, peeled
• unsalted butter
• ounces Stoned Wheat Thins or other whole grain crackers
• large eggs
• ounces Taleggio cheese, rind removed, coarsely grated
• ounces finely crumbled Parmesan
• mayonnaise
• tablespoon chopped thyme, plus ½ teaspoon leaves
• small shallot, thinly sliced
• Special Equipment: A springform pan