Place butter in Instant Pot and hit saute, and then once butter is melted add in the quinoa and cook for 2 minutes until fragrant. This is optional, but it does add flavor to your quinoa.
Add in milk and water and cinnamon in with your quinoa and seal the Instant Pot lid.
Cook manual, high pressure for 4 minutes, followed by a quick release.
Stir in milk or cream, along with peaches and vanilla extract. Stir and serve warm.