Preheat the oven to 350 degrees F or 180 degrees C. Line the muffin pan with cupcake liners and keep it aside.
Whisk flour, baking powder, baking soda, salt, and pumpkin spice in one bowl. Whisk together oil, sugar, pumpkin puree, and peanut butter.
1 cup All purpose flour, 1 teaspoon Baking powder, ½ teaspoon Baking soda, ½ teaspoon Salt, 2 teaspoon Pumpkin spice
Pour the wet ingredients into the dry ingredients and mix until combined. The batter will be thick.
¼ cup Oil, ½ cup Brown Sugar, 1 ¼ cup Pumpkin puree, ½ cup Peanut butter
Fill up to ⅔ of the liners with the cupcake batter. Top it with chocolate chips.
4 tablespoon Chocolate chips
Bake for about 20 minutes or until a toothpick inserted comes out clean. Let the cupcakes cool completely.