01 - Cook rice vermicelli according to package directions. Rinse thoroughly under cold water until cooled and drain well. Set aside.
02 - Arrange all prepared vegetables, herbs, and cooked noodles in separate bowls near your work surface. Have a large shallow dish filled with warm water ready for softening rice papers.
03 - Dip one rice paper wrapper into warm water for 10-15 seconds until pliable but not overly soft. Lay flat on a clean, damp towel or cutting board.
04 - Place one lettuce leaf in the lower third of the wrapper. Add a small portion of noodles, then layer with carrot, cucumber, bell pepper, cabbage, avocado, and a combination of mint, cilantro, and basil leaves.
05 - Fold both sides of the wrapper inward over the filling. Roll tightly from the bottom upward, tucking in ingredients as you go to create a compact cylinder. Repeat with remaining wrappers and fillings.
06 - Whisk together peanut butter, soy sauce, hoisin, lime juice, sesame oil, honey, garlic, and sriracha in a small bowl. Gradually add warm water, whisking continuously, until sauce reaches smooth, dip-able consistency.
07 - Arrange spring rolls on a serving platter with peanut sauce alongside. Serve immediately while vegetables remain crisp.