Preheat the oven to 400 degrees F. Line a baking sheet with parchment paper. Toss diced turnips in olive oil, salt and pepper, and spread in an even layer on the sheet. Bake for 20-30 minutes or until tender and slightly golden brown.
In a high-powered blender or food processor, combine roasted turnips with the chickpeas, tahini, olive oil, garlic, lemon juice, sea salt, and cumin. Blend until smooth, adding more olive oil or water as needed to promote blending. You may also add some more lemon juice if desired.
Serve with fresh vegetables, apples, or pita chips. Enjoy!
Store leftovers in an airtight container in the fridge for up to 3 days.
You can also use this hummus as a condiment or sandwich spread.