Leave at least 1 inch around the edges, cover the lower 1/3 of the rice paper sheet with lettuce (2 pieces), a handful of rice noodles, peppers, carrots, cucumbers, jalapeño (optional), mint, cilantro and green onion (optional).
Fold the lower edge up over the fillings, rolling upward just until the filling is compactly enclosed. Fold over the short sides like you would to make a burrito. Now roll up the roll. Repeat with the remaining sheets of rice paper and filling ingredients.
To make the peanut sauce, in a small bowl combine the peanut butter, rice vinegar, hot sauce, sweetener, soy sauce, garlic. Stir to combine. Add the water, while whisking to thin the sauce.