I made this on 15 Feb 2018 and was very liked my wife and I, great flavor and a perfect side dish. This will be a regular now. I used my small rice cooker for this, a simple cook and warm model which is perfect for this.
Place butter, onion, and garlic in your rice cooker pot, set the cooker to Cook setting. Cook until onion is soft and translucent, stirring occasionally, about 10 minutes or so.
Add chicken broth, milk, cornmeal, and salt, stir.
Cover and cook one full cycle, stirring occasionally, until the cornmeal has absorbed the liquid, about 20 minutes.
When the cooker switches to Warm, add cheeses and black pepper, stir until cheese is melted.
Serve with a pat of butter on the top as a delicious side dish.