Sweet potato (cooked and mashed): 100 g (1/2 cup), Whole wheat flour: 30 g (1/4 cup), Eggs: 100 g (2 medium), Milk (low-fat): 30 ml (2 tbsp), Baking powder: 2 g (1/2 tsp), Cinnamon: 2 g (1 tsp), Nutmeg: 1 g (1/4 tsp), Vanilla extract: 3 ml (1/2 tsp), Salt: 1 g (pinch), Olive oil: 5 ml (1 tsp, for greasing), Pecans (chopped): 10 g (2 tsp), Greek yogurt (low-fat): 30 g (2 tbsp), Maple syrup: 5 g (1 tsp, optional)