Preheat oven to 350℉
Place tomatoes in a colander and salt them with 1 tsp of salt.
Let the tomatoes "sweat" for about an hour
Rinse tomatoes thoroughly
Squeeze as much moisture as possible out with a cheese cloth
Set aside
Saute shallot in butter until browned
Combine tomatoes, shallot, oregano and garlic powder and spread evenly into pie crust
Combine grated cheeses, mayonnaise and Tabasco until well combined
Spread cheese mixture evenly on top of tomatoes
Bake by placing onto a cookie sheet for 30-45 minutes or until cheese is melted and bubbly