Mix together mayonnaise, salt, pepper and basil.
Press each biscuit into a 4-inch circle.
Place biscuit circles on a lightly greased cookie sheet.
Bake at 400 degrees for 6 minutes.
Spread each biscuit evenly with about 2 teaspoons mayonnaise mixture.
Top evenly with tomato slices.
Bake at 400 degrees for 6 minutes more or until mayonnaise mixture is bubbly.