Heat oven to 400°F. Separate dough into 10 biscuits. On ungreased cookie sheets, press or roll each biscuit to form 4-inch round, forming 1/4-inch rim around edge of each. Arrange 3 bacon pieces on each round; top each with tomato slice.
In small bowl, combine onion, cheese, mayonnaise and basil; mix well. Spoon 1 rounded tablespoon mayonnaise mixture over each tomato slice, spreading slightly.
Bake at 400°F. for 11 to 16 minutes or until edges of biscuits are golden brown.