Preheat the oven to 425 degrees F and line a baking sheet with foil or parchment.
Cut the cauliflower into florets and place in large mixing bowl. drizzle on olive oil, add curry powder and garam masala spice. Toss until cauliflower is coated. Spread out on the baking sheet and roast for 30 minutes or until desired crispness.
While the cauliflower is roasting, prepare the tahini sauce by whisking together all ingredients in a small bowl. Set aside.
Remove the roasted cauliflower from oven and toss with green onions, cilantro, peas, cranberries, and pumpkin seeds. Pour the tahini sauce over the mixture, gently toss until incorporated and serve warm.