Yaki onigiri (grilled, soy-glazed rice balls)
The onigiri you grill: the rice is seasoned with soy sauce, sugar and sesame oil before shaping, the triangles are pressed firmer than usual, then pan-grilled on parchment until every side is a crisp, deep golden-brown crust — and brushed with soy at the end so it lacquers in the pan. Crunchy outside, soft and steaming inside. For the shaping itself (by hand or with a mold), see onigiri.

Mise en place — set out in the order it goes in
Ricefreshly cooked, hotStep 2
Rice seasoning- soy
- sugar
- sesame oil
- salt
Soy glazesoy · sesame oilStep 5
Miso glaze- miso
- mirin
- sugar (optional)
Butterin ½ tbsp pats (optional)Step 7
Prep order — what happens when, and what overlaps
minutes
051015202530
Season the rice, let it cool a little 6 min
Shape 9 firm triangles 8 min
Grill on parchment 12 min
Glaze (soy or miso) 3 min
Butter, serve 1 min
Bowl / counterPan / stove
Cook the rice first (soak 20–30 min, then cook) — it has to be hot or warm to shape. The grill is most of the time: don’t rush it, the crust is the point.
Step by step
Rice

1Cook the rice
~1 h with soakingFor this step
- Japanese short-grain rice2¼ cups
- Water (rice)2½ cups (600 ml)
- Soak the rice 20–30 minutes, then cook it with the water in a rice cooker or a heavy pot — see onigiri for the pot method.
- This makes about 990 g of cooked rice: nine 110 g onigiri.

Soy and sugar, microwaved hot and whisked; then the sesame oil and salt. 
Fold it through the hot rice with a slicing motion — don't mash. 2Season the rice
~5 minFor this step
- Soy sauce (rice)3 tbsp
- Sugar1 tbsp
- Toasted sesame oil (rice)1 tbsp
- Kosher salt¼ tsp
- Stir the soy sauce and sugar together and microwave 30–60 seconds until hot; whisk until the sugar dissolves. Stir in the sesame oil and salt.
- Hot rice into a large bowl, pour the seasoning over and fold it through with the rice paddle in a slicing motion — don’t mash.
- Making some miso ones? Set aside 110 g of plain rice for each before you season — the miso glaze goes on plain rice.
- Let it cool just until you can hold it; it must still be warm to shape.

Should look like this Shape

Shape 110 g triangles by hand or in a wet mold. 
Then press each one again, firmer than usual: right hand a roof on top, left hand squeezing the sides. 3Shape firm triangles
~8 min- Shape nine triangles of about 110 g, by hand or in a wet mold (fill to the top edge, lid on, push down until you feel resistance, flip out onto parchment) — see onigiri.
- Then press each one again with wet hands, firmer than a normal onigiri: left hand underneath squeezing the sides, right hand a “mountain” on top; press, roll the corner toward you, repeat for all three corners, then 2–3 more times. Loose ones fall apart in the pan.

Should look like this Grill

Leave each side until it's crisp and browned, then turn it with two spatulas. 
Stand them on their edges too, until the whole outside is crisp. 4Grill until crisp
medium-low~12 min- Line a large frying pan with parchment and set the onigiri on it, a little apart. Medium-low heat.
- Leave each side alone until it’s crisp and browned before you turn it — two silicone spatulas, one side at a time. Moving them early breaks them.
- Turn them onto every side, including the edges, until the whole outside is a crisp golden-brown crust.

Should look like this 
Heat low: brush the top with the soy glaze. 
Turn it glaze-side down onto the parchment, then brush the other side. 5Soy glaze
low~3 minFor this step
- Soy sauce (glaze)1 tbsp
- Toasted sesame oil (glaze)1 tsp
- Stir the soy sauce and sesame oil together. Turn the heat to low (or off).
- Brush one side, turn it glaze-side down onto the parchment, brush the top. A minute or so per side until it lacquers and darkens — it burns fast once the glaze is on.

Should look like this Variations

Spread miso over the top, flip and cook it 10–15 seconds — it burns fast. 6Or: miso glaze
low~1 minFor this step
- Miso2 tbsp
- Mirin1 tbsp
- Sugar (miso glaze)1 tsp
- Mix the miso, mirin and sugar. Grill the plain-rice triangles the same way (a little oil brushed on the parchment helps), until both sides are browned.
- Heat to low, spread miso on top, flip and cook that side 10–15 seconds; spread the other side, flip, 10–15 seconds. Miso burns very fast.

Should look like this 
A pat of butter on each one, straight from the pan. 7Or: butter on top
~1 minFor this step
- Butter½ tbsp per onigiri
- Straight off the pan, put ½ tbsp butter on each hot soy-glazed onigiri and let it melt into the crust.

Should look like this Serve

Break one open: crackling crust outside, soft steaming rice inside. 8Eat hot
- Best straight from the pan, while the crust still crackles and the inside steams.
- To keep: wrap each one in plastic and freeze for up to a month; reheat in a frying pan or the microwave.

Should look like this
Based on: Just One Cookbook — Yaki onigiri (grilled rice balls) · Just One Cookbook — Miso yaki onigiri · Chopstick Chronicles — Yaki onigiri (miso-butter and soy-butter)