Sprinkle some cheese in the bottom of the pie crust.
Layer about 1/2 of the sliced tomato, 1/2 the crumbled bacon, 1/2 the sautééd onion, and more cheese.
Sprinkle a little basil on top and garlic (optional)
***This does not need salt or pepper***
Repeat the layers then spread the mayo and cheese mixture on top.