Into a medium-size skillet over medium heat, add the olive oil. When the oil is hot, add corn and onion. Cook for about 3 minutes, until onion is softened and fragrant.
Stir in riced cauliflower, salt, black pepper, and 2 tablespoons of water. Continue cooking for an additional 3-5 minutes, until vegetables are tender and water is cooked off.
Remove from heat and stir in the cilantro. Adjust seasoning to taste and serve hot.