Step 1

Preheat oven to 400 degrees F (200 degrees C). Lightly grease a 12 cup muffin pan.

Step 2

In a medium saucepan with enough water to cover, boil squash 20 minutes, or until tender. Remove from heat, drain, and puree in a food processor.

Step 3

In a large bowl, whisk together flour, baking powder, white sugar, salt and pumpkin pie spice.

Step 4

In a medium bowl, thoroughly mix together milk, egg and butter. Stir in squash. Fold the squash mixture into the flour mixture just until moistened.

Step 5

Spoon the batter into the prepared muffin pan, filling cups about 1/2 full. Bake 20 minutes in the preheated oven, or until a toothpick inserted in the center of a muffin comes out clean. Remove from muffin pan and cool on a wire rack.