Warm Yam Scones

Name: Warm Yam Scones
Ingredients: One 7-ounce yam or sweet potato; Vegetable oil cooking spray; 1/3 cup sugar; 2 tablespoons canola oil; 1 large egg; 1 teaspoon finely grated orange zest; 1/2 teaspoon pure vanilla extract; 1 1/2 cups all-purpose flour; 1 1/2 teaspoons baking powder; 1 teaspoon cinnamon; 1/2 teaspoon ginger; 1/4 teaspoon ground cardamom; 1/4 teaspoon salt; 1 tablespoon maple syrup