I soaked and cooked 2 cups of oat groats in the instant pot, using the slow cook method. Here's 2 cups, I also added yummy carrots, raisins, cinnamon, and nuts for the carrot cake recipe I've got. Next morning, we had a yummy breakfast!
I have a small rice cooker that can only cook up to a cup and a half of grain. As it's just two of us in my place it works for us. However for this, I've included photos from two different days so it comes to at least two cups of long grain rice.