Perfect Pumpkin Spice Muffins

Name: Perfect Pumpkin Spice Muffins
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: American
Ingredients: 1 1/2 cups whole-wheat flour; 1/2 cup all-purpose flour; 2 tsp. baking powder; 1 1/2 tsp. pumpkin pie spice; 1 1/2 tsp. cinnamon; 1/2 tsp. baking soda; 1/4 tsp. salt; 1 cup canned pure pumpkin; 1/2 cup (about 4 large) egg whites or fat-free liquid egg substitute; 1/3 cup Truvia spoonable no-calorie sweetener (or another natural brand that’s about twice as sweet as sugar); 1/4 cup light whipped butter or light buttery spread; 1/4 cup unsweetened vanilla almond milk; 2 tsp. vanilla extract; Optional topping: powdered sugar