You can follow all the steps for preparing the vegetables and mushrooms. The amount of rice specified is 2 rice cooker cups. The only difference is that instead of measuring out 1 3/4 cups of shiitake soaking liquid, you can just add the soaking liquid straight to the rice cooker bowl up to the 2 cup marker. Then saute the veggies as per the recipe. When they're cooked, just spread the veggies and mushrooms over the rice (without stirring) and then set the rice cooker how you normally would.