Oyster Motoyaki (Japanese Miso Baked Oysters)

Oyster Motoyaki (Japanese Miso Baked Oysters) is a medium Japanese recipe that serves 2. 350 calories per serving.

Prep: 20 min | Cook: 8 min | Total: 40 min

Cost: $15.67 total, $7.84 per serving

Ingredients

  • 6 pieces Large oysters (In shell, fresh)
  • 0.5 tablespoon Lemon juice (Freshly squeezed preferred)
  • 0.5 tablespoon Mirin (Japanese sweet cooking sake)
  • 1 tablespoon Miso paste (White (shiro) miso, low sodium preferred)
  • 0.5 teaspoon Sugar
  • 0.5 cup Japanese mayonnaise (Kewpie brand preferred)
  • 1 dash Paprika (Optional, for heat)
  • 1-2 tablespoons Panko crumbs or pork panko (Optional, for texture)
  • 1 sheet Aluminum foil (For lining baking tray)
  • to taste Salt (Optional, for serving)
  • as needed Lemon wedges (For serving)

Instructions

  1. Make the miso mayo sauce

    In a small bowl, combine 0.5 tbsp lemon juice, 0.5 tbsp mirin, 1 tbsp miso paste, and 0.5 tsp sugar. Mix well until smooth. Add 0.5 cup Japanese mayonnaise and a dash of paprika (optional). Mix until fully combined. Stir in 1-2 tbsp panko or pork panko if desired for texture.

    Time: PT5M

  2. Prepare and open the oysters

    Place the 6 oysters (in shell) on a microwave-safe plate. Microwave on 70% power for 30 seconds to loosen shells. Carefully remove and use a knife to pry open the shells. Run the knife along the top edge to release the oyster meat. Set aside.

    Time: PT5M

  3. Preheat oven and prepare baking tray

    Preheat oven to 350°F (175°C). Line a small baking tray with aluminum foil, crinkling it to create a stable surface for the oyster shells to sit upright.

    Time: PT3M

    Temperature: 350°F

  4. Chop oysters and assemble

    Optionally, chop oyster meat into bite-sized pieces and return to the bottom shell. Arrange shells on the prepared tray.

    Time: PT3M

  5. Top oysters with sauce

    Spoon 1-2 scoops of the miso mayo sauce over each oyster, covering the meat completely.

    Time: PT2M

  6. Bake oysters

    Bake oysters in the preheated oven for 5 minutes.

    Time: PT5M

    Temperature: 350°F

  7. Broil for golden top

    Switch oven to broil. Broil oysters for 1-2 minutes, watching closely, until tops are golden and slightly blistered.

    Time: PT2M

    Temperature: Broil

  8. Cool and serve

    Remove oysters from oven and let cool for 1-2 minutes. Transfer to serving plate. Optionally, sprinkle salt on the plate to help keep shells upright. Serve with lemon wedges.

    Time: PT2M

  9. Cleanup

    Wash all used utensils, mixing bowls, knives, cutting board, baking tray, plate, and serving utensils. Discard or compost oyster shells.

    Time: PT12M

Nutrition Facts

Calories
350
Protein
12g
Carbohydrates
10g
Fat
28g
Fiber
0.5g

Dietary info: Pescatarian, Low carb (if using pork panko), Dairy-free, low-carb, keto-friendly, low-calorie

Allergens: Shellfish, Egg, Soy, Gluten (if using regular panko)

Last updated: April 7, 2026

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Oyster Motoyaki (Japanese Miso Baked Oysters)

A Japanese-style baked oyster dish featuring plump oysters topped with a savory-sweet miso mayonnaise sauce, baked and broiled for a golden finish. Includes optional panko or pork panko for texture. Perfect as an appetizer or special treat.

MediumJapaneseServes 2

Shop all ingredients on Amazon in one click • Printable PDF with shopping checklist

Source Video
34m
Prep
5m
Cook
10m
Cleanup
49m
Total

Cost Breakdown

$15.67
Total cost
$7.84
Per serving

Critical Success Points

  • Properly shucking or opening oysters without injury.
  • Ensuring oysters are not overbaked or overbroiled.
  • Covering oysters completely with sauce to prevent drying out.
  • Watching closely during broiling to prevent burning.

Safety Warnings

  • Oyster shells can be sharp—handle with care.
  • Microwaved oysters and shells will be hot; use oven mitts or tongs.
  • Broiler is very hot—watch closely to avoid burns.
  • Raw or undercooked oysters may pose a risk to those with compromised immune systems.
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