In a shallow pan, combine the soy sauce, liquid smoke, oil, maple syrup, and pepper. Mix to combine then submerge the tempeh strips into the marinade. Let marinate for 30 minutes.
Preheat the oven to 375 degrees Fahrenheit and line a baking sheet with parchment paper. Place the marinated tempeh onto the baking sheet and pour the marinade on top.
Bake for about 10-15 minutes until crispy on the outside but soft on the inside.
To make the sandwich, generously mayo one side of the bread and place into a hot pan over medium-high heat. Let cook for about 2-3 minutes until golden brown. Remove from the pan.
Spread another layer of mayo on the non-toasted side of the bread and layer with lettuce, cooked tempeh bacon, tomatoes, and sprinkle of basil. Place the second piece of bread on top, slice, and serve!