Cut a firm ripe uncooked ʻulu into quarters.
Boil or steam in a large pot for about 20 minutes or until you can pierce it through with a knife strain the water and cool.
Cut the core of the ʻulu and compost. Leave the skin on and cut into bite size pieces.
Heat oil in a large skillet, when hot add onions and sauté or a couple minutes, then add celery and sauté for another minute.
Add another layer of oil, then add ʻulu and sauté until it starts to brown. Note: the ʻulu won’t brown or crisp like potatoes.
Add more oil or water as needed to keep the ʻulu moist.
Add herbs, roasted garlic, nuts, salt, and pepper. Saute for a minute and taste. Add more oil, salt and pepper to taste as needed.
Remove from heat and add mixture to an 8X10 baking dish.
You can also drizzle or brush a tiny bit of oil to help crisp up the top layer of ʻulu.