Falafel Mushroom Loaf

Name: Falafel Mushroom Loaf
Ingredients: Nonstick vegetable cooking spray; 2 1/2 pounds mixed wild mushrooms, trimmed; 1 medium onion, coarsely chopped; 1 garlic clove, peeled, smashed; 1 teaspoon ground coriander; 1 teaspoon ground cumin; 1/2 teaspoon ground cardamom; 2 tablespoons vegetable oil, divided; 1 (15-ounce) can chickpeas, rinsed, drained; 1 large egg; 3/4 cup chickpea flour; 3/4 cup coarsely chopped cilantro; 1/2 cup coarsely chopped parsley; 2 teaspoons kosher salt; 1 garlic clove, peeled; 1/2 cup tahini; 5 tablespoons fresh lemon juice (from about 2 lemons); 1 teaspoon kosher salt; 1 pomegranate, seeds reserved; 2 tablespoons coarsely chopped mint; 2 tablespoons coarsely chopped parsley