Clean the mushrooms and trim the mushroom stems. Tear the mushrooms into thin pieces. You can also slice the mushrooms into thin strips, about ¼-inch thick. These pieces shrink when they cook so keep that in mind if you want bigger pieces.
In a mixing bowl, combine the soy sauce , maple syrup, apple cider vinegar, Sriracha, garlic powder, onion powder, smoked paprika, and black pepper. Whisk the ingredients together to create a marinade.
Place the mushroom strips and the marinade in a Ziploc bag. Allow the mushrooms to marinate for at least 30 minutes.
Preheat your oven to 250°F and line a baking sheet with parchment paper.
Once the mushrooms have marinated, remove them from the bowl and gently squeeze out any excess liquid. Place the mushroom strips in a single layer on the prepared baking sheet.
Bake the mushroom strips in the preheated oven for 1 hour. Flip the mushrooms and bake for an additional hour.
Once the mushroom jerky is done, remove it from the oven and let it cool completely on the baking sheet.
Once cooled, store the mushroom jerky in an airtight container at room temperature for up to a week.