Bake biscuits as directed on can. Cool. With sharp knife, cut each biscuit into 3 layers.
In small bowl, stir together mayonnaise, chopped basil and lemon juice. Add pepper to taste.
To make each biscuit stacker, spread mayonnaise mixture on bottom layer of biscuit. Top with 1 slice of cheese and 2 tomato slices. Add center layer of biscuit; spread with mayonnaise mixture. Top with 2 tomato slices, basil leaves and top layer of biscuit.
Place biscuit stackers on platter. Drizzle stackers with balsamic reduction sauce. Serve immediately.