Mix together the flour, cornmeal, sugar and salt and place in the bowl of food processor or in a large bowl if you are crumbling the butter by hand or with a pastry blender tool
Add the butter and blend until the butter/flour mixture is approximately the size of corn kernels - about 6-7 blasts in food processor
Add the water and mix until the dough starts to come together. Use your hands to gather the dough and shape it into a disk. If the dough feels too dry to do that, add mor water, 1/2 Tb at a time until you can form it into a disc
Wrap th in plastic wrap and chill for at least 1 hour (you may make the dough a day or two ahead of the baking day.)
To make the Tart
Remove the dough from the refrigerator. Unwrap it and, hold the disk of dough perpendicular to the counter, rap the sides of the dough on the counter, turn it as you go to soften the edges which helps them stay together and not get too ragged when you're rolling out the dough
On a lightly floured counter or baking canvas, roll the dough out to a 14-inch circle, turning the dough and sprinklig more flour on the counter and the dough to keep it fron sticking as you're rolling
Place the dough on a baking sheet lined with parchment paper or a silicone baking mat. Preheat the over to 400 Degrees F while you assemble the tart
The Tart
Mix 1 tsp olive oil and 2 Tb. of Buzz Savories Spicy Beer Mustard to make a spreading consistency, then brush a layer of mustard on the dough leaving a few inches empty around the perimeter which you will fold over the filling later
Slice tomatoes about 1/4 inch thick and layer them in concentric circles, overlapping a little, over the mustard
Fold edges of the dough over the tomatoes to make an outer crust
Place chunks of ricotta cheese (or Mozzarella) over, and in some places, partially tucked under the tomatoes
Bake until the tomatoes are soft and cooked through and the crust is dark golden brown, about 45 minutes. Slide onto a cooling rack and let cool for about ten minutes before serving