Whisk together the dipping sauce ingredients in a small bowl and set aside so the flavors can mingle while you wrap.
Soften a rice paper wrapper: Dip a wrapper into warm water for about 8–10 seconds until pliable but not soggy. Lay it on a clean plate or cutting board, keeping the rest of the wrappers covered with a damp towel.
Fill and roll: Spoon 1–2 tablespoons of filling onto the lower third of the wrapper. Fold the bottom edge over the filling, then tuck in the sides and roll tightly toward the top to seal. Repeat with the remaining wrappers and filling.
Cook to perfection: Heat 2 tablespoons neutral oil in a nonstick skillet over medium-high heat. Place dumplings seam-side down and cook 2–3 minutes, until the bottoms are golden and crisp. Flip and cook 1–2 minutes more, until the other side is golden and the filling is heated through. For a softer bite, you can steam the dumplings for 2–3 minutes after crisping, or skip the fry and steam-only for a lighter finish.
Serve: Transfer to a platter and serve with the dipping sauce. Garnish with green onions and sesame seeds for a glossy finish and extra aroma.
Notes
Rice Paper Dumplings are bite-sized snacks with crispy edges and a fresh filling of cabbage, mushrooms, and tofu, served with a zippy dipping sauce.