Press the firm tofu between paper towels to remove excess moisture and slice into long, thin strips.
Heat a non-stick skillet over medium heat and sear the tofu strips until they are golden and firm on all sides.
In a small bowl, whisk together the powdered peanut butter, tamari, rice vinegar, sriracha, garlic powder, and water until the sauce is smooth and velvety.
Prepare the vegetables by shredding the carrots and slicing the cucumber into thin matchsticks.
Fill a wide, shallow bowl with warm water and dip one rice paper sheet for about 5 seconds until it becomes pliable.
Lay the damp rice paper on a clean surface and place a leaf of butter lettuce in the center.
Layer a portion of the seared tofu, edamame, carrots, cucumber, mint, and cilantro on top of the lettuce leaf.
Fold the bottom of the rice paper over the filling, tuck in the sides, and roll tightly to seal the summer roll.
Repeat the process for the remaining three sheets and serve immediately with the peanut dipping sauce.