Preheat the oven to 400°F.

Prepare the marinade: Combine tamari, maple syrup, liquid smoke, and olive oil.

 Slice mushrooms, toss well in the marinade, and let soak for 10-20 minutes. 

Transfer to a lined baking sheet and bake for 20-30 minutes. As always, keep an eye on these and stir them up every 10 minutes or so to make sure they don’t burn. Bake to your desired doneness – you might want less done and more chewy, more more done and more crispy. 

You might want to make extra – it’s hard not to snack these all away.