Preheat your oven to 350°F (175°C). Line an 8x8 inch baking pan with parchment paper.
In a large bowl, whisk together the melted butter, pumpkin puree, and golden monk fruit sweetener until smooth. Add the eggs and vanilla extract and whisk until well combined and slightly thickened.
Add the almond flour, pumpkin pie spice, baking powder, and salt. Stir with a spatula until a thick batter forms. The batter will be slightly softer than a standard blondie due to the pumpkin puree.
Fold in the white chocolate chips and chopped pecans until evenly distributed throughout the batter.
Spread the batter into the prepared pan and smooth the top. The batter should be about 3/4 inch thick and even across the pan.
Bake for 25 to 30 minutes, until the top is set and golden, and a toothpick inserted in the center comes out with just a few moist crumbs. The pumpkin makes these extra moist, so do not expect a completely clean toothpick.
Let cool completely in the pan before slicing into 16 squares. For the best texture, refrigerate for 1 hour before cutting. These blondies are incredibly soft and full of warm spice flavor.