01 -
In a medium bowl, whisk together the flour, ground cinnamon, baking powder, baking soda, and salt until thoroughly mixed.
02 -
Preheat oven to 175°C. Position a rack in the center of the oven.
03 -
Using a stand mixer or hand mixer, beat the softened butter for about 30 seconds until creamy.
04 -
Add brown sugar and white sugar to the butter. Beat on medium speed until the mixture is light and fluffy.
05 -
Blend in the egg, pumpkin purée, and vanilla extract until the mixture is smooth and completely combined.
06 -
Gradually add the dry ingredients to the wet mixture. Beat on low speed until just incorporated, ensuring not to overmix.
07 -
Using a spatula, gently fold the chocolate chips evenly throughout the batter.
08 -
Transfer and evenly spread the batter into a 23x33 cm baking tray.
09 -
Bake in the preheated oven for 35–40 minutes, or until a toothpick inserted into the center emerges clean.
10 -
Allow the blondies to cool in the tray for at least 20 minutes before slicing into squares and serving.