Mix the sauce: In a medium bowl, whisk peanut butter, soy sauce, chili crisp or sriracha, rice vinegar, lime juice, and honey.
Add 1/3 cup hot water and whisk until smooth and glossy. Adjust thickness with more water as needed. Stir in sesame oil.
Cook the noodles: Bring a medium pot of water to a boil.
Add ramen and cook 2–3 minutes until just tender. Reserve 1/2 cup of the starchy cooking water, then drain.
Sauté aromatics: In a large skillet or wok over medium heat, warm the neutral oil. Add garlic and ginger.
Cook 30–45 seconds until fragrant, stirring often. Don’t let them brown.
Add veggies or protein (optional): If using quick-cooking vegetables, toss them into the skillet and sauté 2–3 minutes until crisp-tender. If adding cooked protein, warm it through now.
Combine: Add drained noodles to the skillet.
Pour in the peanut sauce and toss with tongs until every noodle is coated and silky. If it’s too thick, splash in a bit of the reserved cooking water.
Taste and adjust: Add more soy sauce for salt, more lime for brightness, or more chili for heat. Aim for a balanced, slightly tangy, savory, and spicy finish.
Finish and serve: Transfer to bowls.
Top with scallions, chopped peanuts, cilantro, sesame seeds, and a squeeze of lime. Serve hot.