Thick udon noodles are tossed in a garlic-miso butter sauce that blends savory umami depth with rich, rounded fat in one fast pan sauce. Snap peas add crunch and freshness, while shrimp cook through in just a few minutes alongside the noodles. The whole bowl is ready in 30 minutes and draws on classic Japanese pantry staples — miso, soy, and sesame — for its base flavor.
16ozfrozen udon noodlestwo 8-oz bricks; shelf-stable vacuum-packed also works
For the Sauce:
2tbspwhite miso pasteshiro miso for gentle sweetness; use good-quality Japanese brand
2tbspunsalted buttersoftened for easy mixing
1.5tbsplow-sodium soy sauceor tamari
1tbspmirintrue hon-mirin if available
1tspunseasoned rice vinegarbalances richness
1tspchili crispup to 2 tsp to taste; or use 1/2 tsp red pepper flakes
2tbspwaterto loosen the sauce
For Stir-Fry & Finish:
1tbspneutral oilavocado or grapeseed
3clovesgarlic, mincedfreshly minced for best aroma
1tspfresh ginger, gratedfinely grated on microplane
3piecesscallionsthinly sliced; whites for cooking, greens for garnish
8ozlarge shrimppeeled, deveined, patted dry
1cupsugar snap peastrimmed
4ozshiitake mushroomsstemmed and sliced; optional
1tsptoasted sesame oilfor finishing
1tsptoasted sesame seedsfor garnish
1mediumlimecut into wedges, for serving
0.5sheetnori (seaweed)cut into thin strips; optional
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Instructions
Bring Water to a Boil: Fill a large pot with 3 qt water, add 1 tbsp kosher salt, cover, and bring to a rolling boil over high heat (212°F / 100°C). Start this first so it’s ready when your pan work is done.
Make the Garlic–Miso Butter Sauce: In a small bowl, mash together white miso, softened butter, soy sauce, mirin, rice vinegar, chili crisp, and 2 tbsp water until smooth and glossy. It should smell savory and lightly sweet with a hint of heat.
Prep Aromatics and Shrimp: Mince garlic, grate ginger, and thinly slice scallions (keep whites and greens separate). Pat shrimp very dry for better searing.
Cook the Udon: Once the water is boiling (212°F / 100°C), add frozen udon bricks and gently loosen with chopsticks. Cook just until the strands separate and turn bouncy, 1–2 minutes (shelf-stable: 2–3 minutes). Reserve 1/4 cup noodle water, then drain. If sticky, briefly rinse with hot water and drain well.
Sear the Shrimp: Heat a 12-inch skillet or wok over medium-high until very hot (a droplet should sizzle on contact; roughly 400°F / 205°C pan surface). Add neutral oil and the shrimp in a single layer. Sear 1–2 minutes until the underside has golden spots and edges turn pink. Flip and cook 1 minute more until just opaque and curled into a gentle “C.” Transfer to a plate.
Sauté Vegetables and Aromatics: In the same pan, add mushrooms (if using) and cook 1–2 minutes until lightly browned. Add snap peas; stir-fry 1 minute until vivid green and crisp-tender. Add garlic, ginger, and scallion whites; sauté 30–45 seconds until fragrant without browning.
Sauce and Toss: Lower heat to medium. Add the miso-butter mixture; it should melt and bubble gently (aim for a bare simmer, about 185–195°F / 85–90°C). Add drained udon plus 2–4 tbsp reserved noodle water. Toss vigorously until the noodles are glossy and evenly coated, 1–2 minutes.
Finish: Return shrimp to the pan with any juices and toss 30 seconds to warm through. Remove from heat; stir in toasted sesame oil and half the scallion greens. Taste and adjust—more soy for salt, a splash of noodle water if too tight, extra chili crisp for heat.
Plate: Twirl noodles into warm bowls. Arrange shrimp on top; shower with remaining scallion greens and sesame seeds. Garnish with nori strips and serve with lime wedges to squeeze over just before eating.
Notes
Jen’s Tips:
Dairy-Free: Use plant-based butter; choose a richer brand for best mouthfeel.
Vegetarian: Swap shrimp for 8 oz extra-firm tofu (pressed, torn into bite-sized pieces) or increase mushrooms to 8 oz and brown well.
Gluten-Free: Use tamari and swap udon for wide rice noodles; cook rice noodles just shy of done and finish in the sauce.
Max Umami: Add 1 tsp toasted sesame seeds to the sauce and bloom them briefly in the hot pan before tossing noodles.
Shrimp Sear: Patting dry is key; moisture prevents browning. Cook to a gentle “C” curl—tight “O” means overcooked.
Speed Boost: Boil water in an electric kettle to jump-start the pot; you’ll save 3–5 minutes.
Heat Control: If sauce thickens too much, splash in noodle water 1 tbsp at a time to keep the glaze silky.
Serving Suggestions:
Serve in warm, wide bowls.
Aim for Contrast: Glossy ivory noodles, blush-pink shrimp, bright green peas, and emerald scallions.
A final sprinkle of sesame seeds adds speckled texture.
Pair with chilled Japanese beer, hot green tea, or a crisp Sauvignon Blanc.
Culinary Context:
Udon’s roots stretch across Japan, with Sanuki-style noodles from Kagawa celebrated for their springy chew. Miso–butter combinations are beloved in Hokkaido, and this bowl tips its hat to that indulgence while leaning into the quick-fire spirit of wok-style, wafu pasta dishes found in modern izakayas.
Optional Advanced Instructions:
Make-Ahead: Mix the miso-butter sauce up to 2 days ahead and refrigerate; bring to room temp before cooking.
Wok Technique: Preheat a carbon-steel wok thoroughly for superior wok hei; cook shrimp and veg in small batches to avoid steaming.
No Chili Crisp? Use 1/2 tsp red pepper flakes and 1/2 tsp sesame oil in the sauce.