What are oat groats? They are whole oat grains. They look a lot like brown rice. This article describes a little more about them, and how to cook them. I didn't bother to find out before making them. I soaked 1/4 cup overnight in 1/2 cup water, then cooked them in the microwave for about 10 minutes over all. I'd separate 2 minutes with several minutes of soaking, then repeat 3-4 times. I wasn't in a hurry. This saves dirtying a pot. This seemed to work fine. Then I added some frozen blueberries, mango, and sliced banana. I microwaved some more to thaw the fruit. I enjoyed it. If you want it sweeter, you can add chopped dates or raisins or date syrup. You can also add chopped nuts.