Good Food Made Simple makes steel cut oats already cooked and ready to go, frozen in single serving pouches. I found them in my regular grocery store (Publix) near the frozen organic breads. They have plain, with berries, and with maple syrup. No artificial anything, no preservatives, colors etc. Just like their name says "Good Food Made Simple." A bit pricey, so I only use them when I'm in a huge hurry, but I like steel cut oats so they're nice to have in the freezer.
"If your lifestyle doesn't control your body, your body will eventually control your lifestyle." Ern Baxter