Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
In a large bowl, toss the cauliflower florets with olive oil, cumin, paprika, turmeric, coriander, cayenne pepper, salt, and pepper until well coated.
Spread the seasoned cauliflower on the prepared baking sheet in a single layer. Roast for 25 minutes, or until the cauliflower is tender and the edges are starting to brown.
While the cauliflower is roasting, combine the mixed salad greens, diced cucumber, cherry tomatoes, and red onion in a large bowl.
In a small bowl, whisk together tahini, lemon juice, minced garlic, and salt. Add water, one tablespoon at a time, until the dressing reaches a pourable consistency.
Divide the salad base among four bowls. Top each bowl with an equal portion of the roasted cauliflower shawarma.
Drizzle tahini dressing over each bowl and sprinkle with toasted almonds and fresh parsley if using.
Enjoy your Keto Vegan Cauliflower Shawarma Bowl immediately, packed with flavor and healthy fats!