Stovetop Method:
In a large pot, combine the butternut squash cubes, 3 cups of vegetable broth, and cinnamon.
Cover and bring to a boil over high heat.
Once boiling, reduce heat to low, slightly uncover the pot to prevent boiling over, and simmer for about 20 minutes, until the squash is tender.
Instant Pot Method:
Add the butternut squash, broth, and cinnamon to the Instant Pot.
Seal the lid and cook on high pressure for 7 minutes.
Quick-release the pressure once cooking is complete.
Slow Cooker Method:
Combine all ingredients in the slow cooker.
Cook on low for 6-8 hours or on high for 3-4 hours, until the squash is soft.