Had this @ a dinner party, enjoyed it so much I asked for the recipe, which was supplied by Leone McDermott. Doubt she'll mind me sharing. I garnish w/toasted coconut and maybe some ice cream if you want.
Two points:
1) Although the recipe says to smooth the top after pouring the batter into the pan, my batter was liquid enough that that wasn't needed. I've no idea why that was the case, except that my eggs were probably closer to jumbo than large in size.
2) The recipe says to bake for 1 1/2 hours, but my cake took only about 65 min. My oven runs pretty true to temperature, so I can't account for this. Lee, who made the chocolate mochi cake, also said that hers was done early. I'd start checking after about an hour.
Hawaiian Sweet-Rice-Flour Coconut Cake
3 cups (1 pound) mochiko (sweet rice flour)
2 1/2 cups sugar
2 teaspoons baking powder
1/4 teaspoon salt
2 (14-ounce) cans unsweetened coconut milk (not low-fat)
5 large eggs
1/2 stick (4 tablespoons) unsalted butter, melted and cooled
1 teaspoon vanilla extract
Equipment: a 13-by-9-inch baking pan
Put a rack in middle of oven and preheat oven to 350 degrees F.
Whisk together mochiko, sugar, baking powder, and salt in a large bowl.
Whisk together coconut milk, eggs, butter, and vanilla in another bowl. Add coconut mixture to flour mixture, whisking until combined.
Pour batter into ungreased baking pan, smoothing top. Bake until top is golden and cake is beginning to pull away from sides of pan, about 1 1/2 hours. Cook cake completely in pan on a rack.
Cut cake into 24 squares before serving.
"In pursuit of joys untasted"
from Giuseppe Verdi's La Traviata