Heat a pan over medium heat and add sesame oil. Once heated, sauté garlic and ginger until fragrant. Add shredded cabbage, carrots, bell peppers, and bean sprouts
Stir-fry for 3–4 minutes until slightly softened. Pour in soy sauce, salt, and black pepper, and cook for another minute. Remove from heat and allow the filling to cool slightly.
Lay a spring roll wrapper on a clean surface in a diamond shape. Place 2 tablespoons of the vegetable filling near the bottom corner of the wrapper.
Fold the bottom corner over the filling, then fold in the sides, and roll tightly. Seal the edge with the cornstarch-water mixture. Repeat with the remaining wrappers and filling.
Preheat the oven to 400°F (200°C). Place the assembled spring rolls on a baking sheet lined with parchment paper. Lightly brush each roll with olive oil or spray with cooking spray.
Bake for 18–20 minutes, flipping halfway through, until golden brown and crispy.
Prepare the Peanut Dipping Sauce
In a small bowl, whisk together peanut butter, soy sauce, rice vinegar, honey or maple syrup, sriracha (if using), sesame oil, and warm water until smooth and well combined.