Preheat oven to 350. Line cookie sheets with a Silpat or parchment paper. Set aside.

In a large bowl, combine pumpkin, sugar, oil, and egg.

In a small bowl, stir baking soda into milk and dissolve.

Stir together flour, baking powder, cinnamon, and salt in a separate bowl. Add flour mixture to pumpkin mixture and mix well. Add chocolate chips, and vanilla; stir lightly just to combine.

Drop dough by 2-tablespoons on your prepared cookie sheets, approximately 2 inches apart. Bake for 10 to 12 minutes or until edges are light brown. Cool on cookie sheets for 2 minutes, then remove to wire racks to cool completely.