
You could add the pineapple at the beginning of the cooking to make it softer if you're using fresh pineapple. I tend to always use frozen which I find soft enough by just thawing it.
If needed, store any leftovers in an airtight container in the fridge for 2-3 days. Reheat the oatmeal in a small saucepan on the stove with a splash of milk or water.
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