In a medium skillet, fry bacon. Let drain on paper towels. Crumble bacon into a medium-size mixing bowl. Mix tomato, onion, cheese, mayonnaise, and basil into the mixing bowl. Separate each biscuit into 2 biscuits and shape one biscuit at a time into the cups of the prepared mini-muffin tin.
Fill biscuits with the bacon mixture.
Bake for 10 to 12 minutes, or until golden brown.