To prepare a healthy whole wheat spiced pumpkin muffins recipe, first you need to prepare your ingredients. First, you'll need your flour, baking powder, sugar, salt, and pumpkin pie spice. Then, add your dry ingredients to the wet ingredients and mix until everything is combined. Next, preheat your oven to 350?F (180?C) and grease your muffin tin with non-stick cooking spray. Now, pour your batter into the muffin pan and bake for 18 to 20 minutes or until the tops are golden brown. Remove from the oven and let cool for 5 minutes before serving.