Preheat your oven to 350 degrees F. Spritz your baking sheet with nonstick spray or line with aluminum foil.
Mix the tempeh, onion, and 1 c BBQ sauce (to taste) in a bowl.
Arrange chips on prepared baking sheet. Dollop with tempeh mixture. Cover in cheese and an extra drizzle of BBQ sauce, if desired.
Bake until cheese is melty, about 10 minutes. [If adding cheese sauce after baking, bake until tempeh is hot, which is still about 10 minutes. Then, drizzle with cheese sauce]
Garnish with green onion and/or your other favorite nacho toppings. Lettuces are always a good choice!
Notes
I didn't include nutritional info on this, because it really varies based on your chip choice (and cheese choice!). I called this 4 servings because 2 of us got 2 large-ish meals out of it. A more moderate portion would likely result in 6 servings.
Nutrition Information
Serving size: ¼ recipe
Recipe by Hidden Fruits and Veggies at https://www.hiddenfruitsandveggies.com/2014/09/24/bbq-tempeh-nachos/