Place rice in bowl of rice cooker. Fill with water to three-cup fill line in rice cooker (three cups water). Add oil and yellow spice mix – stir to mix in spices. Close rice cooker lid and press start on setting for white rice. When rice is done, fluff with rice paddle or fork.

Fill deep bowls with rice. Then top with a large spoonful of each topping: tomatoes, avocado, black beans, corn, and cheese. Add a dollop of sour cream and drizzle with taco sauce if desired. Serve with broken taco shells or tortilla chips.