Add the pumpkin puree to a medium bowl. Add the rest of the ingredients, including the chocolate chips if using. Stir to combine thoroughly with a spoon.
Place batter in the fridge or freezer while the oven preheats to 375 degrees F. (Chilling the batter helps it hold together for scooping and portioning.)
Line a baking sheet with parchment paper. Scoop and drop 2-tablespoon-size balls of batter onto the prepared baking sheet. Press slightly to flatten to about ½-inch thick.
Bake for 14-16 minutes, or until cookies are lightly golden brown around the edges and firm to the touch.
Remove from oven and let cool on the baking sheet.
Serve immediately or store and serve at room temperature or chilled.
