Overnight Oats Failure

I make overnight oats one or two times a month. I usually make a batch that includes 1 cup of dry oats and it lasts me a few days. We have only been keeping Steel Cut Oats in the household lately. I had a craving for overnight oats so decided to give it a go with the steel cut oats. What I found is that the steel cut oats do not soak up the moisture like the rolled oats. The end result was a chewy mess. Recipes online say to heat up the oats before serving to make them smoother. I tried heating them but it still was not smooth as I like it and I prefer my oats cold. Additionally you lose the benefits from the active cultures in the yogurt when you heat them. Next time I will pre-cook the steel cut oat or use rolled oats again.