Roasted Cauliflower and Chickpeas with Creamy Tahini Maple Sauce

Name: Roasted Cauliflower and Chickpeas with Creamy Tahini Maple Sauce
Ingredients: For Salad:; 1 medium head cauliflower, washed, trimmed and cut into florets; 1 can of chickpeas (398ml), drained and rinsed; 1/2 cup pomegranate seeds; a few sprigs of parsley, washed, dried and coarsely chopped; 1 teaspoon fine sea salt, divided; 1 teaspoon garlic powder, divided; 3 tablespoons olive oil, divided; For Dressing; 1/2 cup tahini; 1 large lemon, juiced; 1/4 cup maple syrup; 1/2 cup water; 1 1/4 teaspoons fine sea salt; 1 garlic clove, peeled; 1/4 cup olive oil (optional)