Preheat oven to 350. Prepare baking sheets with parchment. Mix together oil, vanilla and sugar. Add eggs and pumpkin puree. In a separate medium bowl, all together all remaining dry ingredients and spices. Combine the two together until a smooth batter forms. Stir in mini chocolate chips if desired OR just sprinkle some on top of the muffies. Use a 4 tablespoon cupcake scoop to scoop batter, level with a butter knife and drop straight down onto prepared baking sheet. You can fit 6 on each tray. This recipe makes 15. Bake muffies at 350° for 13-15 minutes. Do not overbake. I like to use a toothpick to test! Allow muffies to fully cool, about 15 minutes.Sprinkle a dusting on top of muffins for a beautiful and sweet garnish. If you'd like the cream cheese frosting, allow the muffies to fully cool, then blend cream cheese frosting ingredients and pipe onto muffie. ENJOY