Prep the shrimp: Pat shrimp dry with paper towels.
Season lightly with salt and pepper. Dry shrimp sear better and develop a nice snap.
Make the sauce: In a small bowl, whisk soy sauce, oyster sauce, sesame oil, rice vinegar, brown sugar, red pepper flakes, and water or broth. If you like a thicker glaze, whisk in cornstarch.
Set aside.
Cook the ramen: Bring a pot of water to a boil. Add noodles and cook 1–2 minutes, just until they loosen and are barely tender. Do not overcook. Drain and toss with a teaspoon of oil to prevent sticking.
Heat the pan: Set a large skillet or wok over medium-high heat. Add 1 tablespoon oil.
When it shimmers, add shrimp in a single layer.
Sear the shrimp: Cook 1–2 minutes per side until pink and opaque. Remove to a plate. They’ll finish in the sauce later.
Stir fry the aromatics: Add the remaining 1 tablespoon oil.
Add garlic, ginger, and the white parts of the green onions. Stir 30 seconds until fragrant.
Add the veggies: Toss in bell pepper, carrot, and peas. Stir fry 2–3 minutes until crisp-tender.
You want a bit of bite left.
Combine everything: Return shrimp to the pan. Add noodles and pour in the sauce. Toss with tongs for 1–2 minutes until the sauce thickens slightly and coats the noodles.
Finish and taste: Turn off heat.
Add the green onion tops and a squeeze of lime if using. Taste and adjust with more soy (salt), vinegar (brightness), or chili (heat).
Serve: Sprinkle with sesame seeds and extra chili if you like. Eat hot and enjoy that glossy, slurpable goodness.