Preheat oven to 375 degrees Fahrenheit. Line 1-2 baking sheets with parchment paper or a silpat baking mat.
After cauliflower is removed from the stem and cut into florets, place in a large bowl. In a separate small bowl, mix together the tahini, sesame oil, maple syrup, lemon juice, red pepper flakes, and salt. Toss the tahini mix with the cauliflower making sure to coat all pieces. You can use your hands if needed.
Place on a parchment paper lined baking sheet and spread out evenly, making sure they are spread out enough so they don't steam.
Roast for 20 minutes, toss, and then roast for 10-15 more minutes until golden brown and fork tender.