Preheat oven to 350 degrees. Roll out pie crust and sprinkle with parmesan and cayenne. Cover crust with a sheet of wax paper and press cheese and cayenne into crust by hand or with a rolling pin. Place pie crust into a 9 inch pie plate and crimp edges. In a small bowl stir together mayonnaise, lemon juice, basil and salt and pepper. Sprinkle 1/2 cup cheese in bottom. Top with 1/3 of the tomatoes and scallions. Sprinkle with more cheese and drizzle on 1/3 of mayonnaise mixture. Continue to layer tomatoes, scallions, cheese and mayonnaise and finish with cheese on top. Bake for 30-40 minutes until crust is golden and pie is bubbly. Allow pie to cool for 30 minutes. The pie will be easier to slice when it has completely cooled.
Recipe Courtesy of Food Network Kitchens