For the Dough

1. Place 1 cup of sifted flour and salt in the bowl of a heavy–duty mixer fitted with the paddle attachment.
2. Turn the mixer to low speed add the butter a small amount at the time. When all butter had been added increase the speed to medium and mix until the butter is completely blended with the flour.
3. Reduce the speed add the remaining flour and mix just to combine.
4. Add water and mix until incorporated. Dough will come around paddle and should feel smooth. Make sure no pieces of butter still remain.
5. Refrigerate for at least one hour.
6. Lightly brush the inside of 9 inch round mold 2 inches high with canola oil and place it on a parchment–lined baking sheet
7. Place dough on a floured work surface and roll it to 1/16 inch thick and about 14 inches in diameter
8. Lift the dough into the mold
9. Place in the refrigerator for at least 20 mins to re-solidify the butter
10. Put a rack set in the middle of oven and pre heat oven to 375 f
11. Line the tart shell with a 16 inch round parchment. Fill the tart with dried beans gently guiding the beans into the corners of the shell and fill the shell completely for weight.
12. Bake the shell for 30 to 40 mins
13. Remove beans and parchment and let cool

For the Batter

1. Combine milk and heavy cream in a large saucepan and bring to a boil.
2. Remove the skin on the surface and let cool for 15 mns
3. In a mixing bowl combine the eggs and the egg yolk and whisk in the milk and the heavy cream mixture
4. Add the pinch of nutmeg and the salt

For the Filling

1. Wash the mushrooms and pat dry
2. Sauté the mushrooms in the 3 tbsp of Canola oil until slightly tender, drain and reserve, disregard the liquid.
3. Slice tomatoes and reserve
4. Chop the thyme and reserve

Assembling and Cooking the Tart

1. In the precooked tart place the chopped thyme then the cremini mushrooms making sure they are spread out evenly.
2. Pour the batter to 3/4 high or to the level of mushrooms
3. Add the Swiss cheese and the Parmesan
4. Pour the rest of the liquid over the filling
5. Place the TART in oven middle shelf 375 F and cook for 35 mins
6. Let cool at room temperature for 20 mins