Preheat oven to 400°F.Prepare Tempeh Marinade by combining soy sauce, maple syrup, and chili-garlic sauce in a large bowl. Add tempeh and toss to combine. Let sit at room temperature for 15 minutes, tossing every 5 minutes to thoroughly coat.
Spread tempeh on a large rimmed baking sheet lined with parchment paper for easy cleanup. Bake for 25 minutes, tossing once halfway through.
Meanwhile, prepare the Peanut-Ginger Sauce by combining peanut butter, soy sauce, maple syrup, lime juice (or vinegar), chili-garlic sauce, and ginger in a medium-size bowl; stir with a whisk.
Remove tempeh from the oven and toss it in 3 Tbsp. of the Peanut-Ginger Sauce (reserve remaining). Place tempeh back in the oven and bake for 5 more minutes.
Remove tempeh from the oven and transfer to a serving platter. Spoon remaining Peanut-Ginger Sauce overtop. Serve with your sides of choice.
