Combine maple syrup, soy sauce/tamari/coconut aminos, brown sugar, onion powder, garlic powder, dried basil, liquid smoke, smoked paparika, red pepper flakes in a bowl. Add the sliced tempeh and allow to marinate for at least 20 minutes.
FOR BAKING
Preheat your oven to 425 degrees F.
On a parchment-lined baking sheet, spread the tempeh and bake for 30 minutes, flipping halfway thorugh.
FOR PAN FRYING
In a cast iron skillet (or regular skillet), heat 2 tablespoons of neutral-tasting oil over medium heat.
Add the marinated tempeh to the pan and cook for 3-6 minutes on each side, or until crispy.
Notes
* only add the red pepper flakes if you like a little heat* smoked paprika is optional, but recommended if you like a smoky, authentic "bacon" flavor* save in the fridge in an airtight container for up to one week