Place the halved pumpkin and the sweet potato on a lined baking sheet. Peak sweet potato with a fork a couple of times. Bake for 40-45 minutes until completely soft. Let cool until cool enough to handle.
Remove skin of pumpkin and sweet potato and add into a bowl. Mash with a fork or a potato masher and add the rest of the ingredients. Mix until combined, the mash should still be slightly chunky.
Serve immediately or heat up again if needed.
Garnish with thyme, freshly cracked pepper and more tahini. *I used a mixture of butternut squash and Hokkaido pumpkin.
Recipe by at https://fannythefoodie.com/de/2018/11/20/sweet-potato-pumpkin-mash-tahini/