How to Make It
Preheat the oven to 350°. Brush a large rimmed baking sheet with coconut oil and arrange the squash in a single layer. Roast until tender, about 30 minutes.
Transfer the squash to a large bowl and mash with a fork until smooth. Stir in the chickpea flour, parsley, cilantro, garlic, coriander, cumin, cayenne, 1/4 cup of the lemon juice and 6 tablespoons of water. Season the falafel mixture with salt.
In a shallow bowl, mix the sesame seeds. Shape the falafel mixture into 16 heaping-tablespoon-size balls and roll them in the sesame seeds, pressing to adhere. Transfer to a large rimmed baking sheet.
Gently toss the falafel with the 2 tablespoons of coconut oil and space them at least 1 inch apart on the baking sheet. Bake for 20 minutes, or until crisp and starting to brown in spots; turn the falafel halfway through baking.
Meanwhile, in a small bowl, whisk the yogurt with the mint and the remaining 1 teaspoon of lemon juice. Season with salt. Serve the falafel warm with the yogurt sauce.
Chickpea flour is available at Indian and Mediterranean markets, as well as at Whole Foods.