Slice Tempeh: Carefully cut the tempeh block into thin slices, about ¼ - ⅛ inch thick.
Mix Marinade: Whisk together the soy sauce, maple syrup, apple cider vinegar, liquid smoke, smoked paprika, garlic powder, and black pepper in a container with a lid. Stir until well combined.
Marinate: Place the tempeh slices in the container with a lid. Shake the container gently to coat all the pieces. If you shake too hard, some of the pieces may break, so be gentle. Alternatively, use a resealable plastic bag. Let the tempeh marinate for at least 30 minutes, or overnight in the refrigerator.
Bake: When you're ready, preheat your oven to 375°F (190° C). Arrange the tempeh strips on a baking sheet lined with parchment paper. Brush oil over each piece. Bake for 10-15 minutes, then flip the strips and bake for another 10-15 minutes until they are browned and crispy
Serve: Serve immediately as part of a hearty breakfast, in sandwiches, or crumble it over salads for a smoky, protein-packed addition. See the post for more ideas.