Preheat oven to 350' degrees.
Let frozen pie crust thaw while you assemble all the prep.
Chop tomatoes and place into a colander over a bowl to help drain. Salt thoroughly the tomatoes and toss. Let sit for 20 minutes.
After tomatoes have drained, squeeze as much moisture as you can using paper towels or dish towel.
Sauté onions on medium low heat with 1 TBSP butter until tender and translucent.
In a mixing bowl, toss sautéed onions and chopped tomatoes.
Place pie crust into pie dish. With a fork, poke a few holes on bottom of pie crust. Pre-bake shell for 8-10 minutes until lightly golden brown.
Add chopped tomatoes/onion mixture to pie crust. Add chopped basil to the top.
In a small bowl, mix mayonnaise and shredded cheese, hot sauce, and black pepper. It will be very thick mixture.
Spread mixture over tomatoes.
Place in oven and bake at 350 until cheese is golden brown for 30-45 minutes. If you aren't using a deep dish pie pan, you may want to place pie pan on top of a baking sheet to avoid any excess that may bubble over pan while baking.
Serve as a side dish or a main meal. If a main meal, may only serve 2 people.
Let sit for 10 minutes to cool before serving.