1 9-inch pie shell (see pie crust recipe for homemade version)
1/2 yellow or red onion, chopped
3-4 tomatoes, cut in half horizontally, squeezed to remove excess juice, roughly chopped, to yield approximately 3 cups chopped tomatoes
1/4 cup sliced basil (about 8 leaves)*
2 cups grated cheese (combination of sharp cheddar and Monterey Jack, or Gruyere or Mozarella)
3/4 cup mayonnaise
1 teaspoon (or more to taste) of Frank's Hot Sauce (or Tabasco)
Salt and freshly ground black pepper

*To slice basil, chiffonade them by stacking the leaves on top of each other, roll them up like a cigar, starting at one end slice the "cigar" crosswise in thin slices.