Combine the diced butternut squash, chopped onion, vegetable broth, dried basil, and dried oregano in the bowl of your slow cooker. Stir everything together so the herbs are mixed through.
Cover and cook on low for 6 hours or on high for 3 hours. The squash should be soft enough to break apart with a spoon.
Transfer the cooked ingredients to a blender along with the softened cream cheese. Blend until completely smooth.
Return the blended soup to the crockpot and cook on low until it's warmed all the way through. Season with salt and pepper before serving.
Notes
Storage: Store leftover soup in an airtight container in the refrigerator for up to 5 days or freeze for up to 3 months.