Author unknown To make these scrumptious longan walnut muffins, follow these simple steps: Ingredients:– 1 1/2 cups all-purpose flour– 1/2 cup sugar– 1/2 tsp baking powder– 1/2 tsp baking soda– 1/4 tsp salt– 1/2 cup chopped walnuts– 1/2 cup chopped longan fruit– 1/2 cup milk– 1/4 cup vegetable oil– 1 egg– 1 tsp vanilla extract…