In a mixing bowl, combine flour and salt. Add cold butter and mix until crumbly.

Gradually add ice water, mixing until the dough forms. Wrap in plastic and refrigerate for 30 minutes.

In a large bowl, mix sliced tomatoes, mozzarella, cheddar, basil, oregano, salt, pepper, and beaten egg.

Preheat the oven to 375°F (190°C). Roll out the dough and fit it into the pie dish.

Pour the tomato filling into the crust. Bake for 35-40 minutes or until the filling is set and the crust is golden.

Let cool for 10 minutes before slicing and serving.