Prepare the Ingredients:
Prepare all your vegetables. Julienne the carrot and cucumber, slice the avocado, shred the lettuce, and thinly slice the purple cabbage. Set aside.
If using fresh herbs like mint and cilantro, rinse and pat them dry.
Soak the Rice Paper:
Fill a large bowl with warm water. Gently dip each rice paper wrapper into the water for about 5-10 seconds, until softened but still pliable. Be careful not to soak too long to avoid tears.
Assemble the Spring Rolls:
Lay the soaked rice paper flat on a clean, damp kitchen towel or plate.
Place a small amount of lettuce in the center, followed by the julienned carrot, cucumber, avocado slices, purple cabbage, and herbs (if using).
Fold in the sides of the rice paper and tightly roll up the spring roll, like a burrito. Repeat this process until all ingredients are used up.
Make the Peanut Sauce:
In a small bowl, combine the peanut butter, soy sauce, rice vinegar, honey, sesame oil, minced garlic, and chili paste or sriracha (if using). Whisk until smooth.
If the sauce is too thick, add water 1 tablespoon at a time to reach your desired consistency.
Serve:
Arrange the veggie spring rolls on a plate and serve with the peanut dipping sauce on the side.