Before scooping oats into any random bowl and microwaving them, consider the bowl you’re using, as using the wrong type can significantly impact the texture of your oatmeal.
When you ladle cooked oats from a pot into a shallow bowl, the oats will cool off much quicker than if spooned into a deeper soup bowl or mug, and there’s a good reason for it.
Per the University of Minnesota, if you’re using a dish or bowl with a depth of less than 2 inches, the heat contained in your cooked oats will travel and dissipate much faster.
When food cools, heat transfer is accelerated by a large surface area, so storing oats in a deep bowl can facilitate heat retention and prevent your oatmeal from becoming gluey.