Preheat oven to 350°F (180°C).
In a large mixing bowl, sift together all your dry ingredients (flour, cocoa powder, baking powder, pumpkin pie spice, pinch of salt,).
½ cup white all purpose flour, 2 tablespoon cocoa powder, 2 teaspoon baking powder, pinch of salt, 1 teaspoon pumpkin pie spice
In a second bowl, mix together all your wet ingredients (pumpkin puree, maple syrup, milk, coconut oil), using a whisk.
¾ cup pumpkin puree, ½ cup maple syrup, ¼ cup plant milk, 3 tablespoon coconut oil
Pour your wet ingredients into your dry ones and stir until just combined.
Add chocolate chips and walnuts and stir again.
Transfer the batter to a small baking dish (mine was 8,5x6 in/ 22x15cm) lined with parchment paper.
Add a handful of additional chocolate chips on top.
Bake at 350°F (180°C ) (top& bottom heating) for 25-30 minutes.
Let sit in the pan for another 10 minutes. Then transfer to a wire rack to cool.