Preheat oven to 400°F. Spray muffin pan with cooking spray. Mix flour, sugar, baking powder, baking soda, pumpkin pie spice and salt in large bowl.
In a separate bowl whisk together pumpkin, eggs, oil, yogurt and milk. Combine wet and dry ingredients until just blended. Stir in half a cup of chocolate chips.
Spoon batter into muffin tins. Sprinkle remaining chocolate chips on top of each muffin. Bake for approximately 20 minutes or until toothpick comes out clean.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.