Prep the shrimp: Pat shrimp dry with paper towels. Season lightly with salt and black pepper.
This helps them sear instead of steam.
Warm the pan: In a large skillet or wide pot, heat 1 tablespoon butter and the olive oil over medium-high heat until the butter foams.
Sear the shrimp: Add shrimp in a single layer. Cook 1–2 minutes per side until just pink and curled. Transfer to a plate.
Do not overcook.
Sauté aromatics: Reduce heat to medium. Add 1 tablespoon butter, garlic, and ginger. Stir 30–45 seconds until fragrant.
Do not brown the garlic.
Build the broth: Pour in broth, soy sauce, red pepper flakes, and sesame oil. Bring to a lively simmer. Taste and adjust salt if needed.
Cook the noodles: Add ramen to the simmering broth.
Cook according to package directions, usually 2–3 minutes, until just tender.
Finish with flavor: Stir in the remaining 1 tablespoon butter and the lemon juice. Return shrimp (and any juices) to the pan. Toss gently for 30–60 seconds to warm through.
Add greens: If using spinach or other quick-cooking veggies, fold them in now until just wilted.
Turn off heat.
Garnish and serve: Top with scallions and parsley or cilantro. Serve hot with extra lemon wedges. Adjust heat with more red pepper if you like.