For the Crust:

1. Combine the flour and salt in a food processor and pulse once. Remove the cubed butter from the refrigerator just before using and add to the flour using a fork to coat the butter with the flour. Pulse the food processor until the mixture is the size of small peas (about 15 times). Then while the food processor is running, very slowly pour the ice water through the spout until the dough forms a ball.
2. Remove the dough from the food processor and wrap in wax paper. Flatten with the palm of your hand and place in the refrigerator for at least 1 hour or until ready for use.

For the Roasted Garlic:

1. Preheat oven to 400ºF.
2. Using a sharp knife, slice off the tops of the garlic bulbs exposing each clove of garlic. 
3. Place the 2 garlic bulbs on a sheet of aluminum foil. Drizzle a small amount of oil olive on each bulb and allow it to seep in between the cloves. Sprinkle each bulb with a little salt.
4. Tightly wrap the foil up around the garlic and seal by pinching the foil. Place on a sheet pan or pie tin in the preheated oven and bake for 45 minutes. 
5. Allow the garlic to cool in the foil and use immediately or refrigerate until ready to use.

For the Filling:

1. Place a cast iron or other heavy-bottom frying pan over medium-low heat. Add 1 tbsp of extra-virgin oil to the pan and allow it to heat.
2. Toss the tomatoes, basil, a pinch of salt and 1/2 the thyme into the pan and toss to coat everything with the hot oil. Gently cook for about 20 minutes while stirring occasionally. Cook until the tomatoes have just begun to burst and release their liquid.
3. Add the balsamic vinegar, toss again and cook for another 5 minutes. Remove from heat and allow to cool to room temperature. Remove the cooked thyme sprigs and discard.

For the Crostata:

1. Preheat the oven to 450℉.
2. Remove the dough from the refrigerator and place on a wooden board. Dust with a little flour on both sides of the dough and on the wooden board.
3. Using a rolling pin and moving quickly, roll out the dough into roughly a circular shape about 1/8-inch thick.
4. Transfer the prepared dough to the parchment-lined sheet pan.
5. Sprinkle the grated Fontina cheese in the center of the prepared dough creating an even circle about 12 inches in diameter.
6. Unwrap the roasted garlic and squeeze the roasted cloves out with your hands. Evenly distribute the garlic over the cheese.
7. Using a slotted spoon, transfer the burst tomatoes to the crostata leaving behind the liquid that’s accumulated.
8. Fold up the edges of the crostata around the contents overlapping the dough as you go. Tear off all but 1-inch of the dough exposing the beautiful tomatoes. Drizzle just a little of accumulated juices over the tart to any spots that look a little dry. Treat yourself to the rest with a spoon!
9. Arrange the remaining thyme sprigs on top of the crostata.
10. Place in the oven and cook for 20-minutes until golden brown. Check after 10-minutes. If the crust is starting to burn, place a loose piece of aluminum foil over the crust for the remainder of the cook time.
11. Remove, let cool and serve at room temperature.