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, almond butter, and brown monk fruit sweetener until completely smooth. Add the eggs and vanilla extract and whisk vigorously until the batter becomes thick and glossy.
Add the almond flour, cinnamon, nutmeg, allspice, baking powder, and salt. The warm spice blend creates that signature cookie butter flavor. Stir with a spatula until everything is fully combined into a thick, fragrant batter.
Fold in the sugar-free white chocolate chips. Spread the batter evenly into the prepared pan and smooth the top.
Bake for 22 to 26 minutes, until golden brown on top and the edges are set. A toothpick inserted in the center should come out with just a few moist crumbs. The spiced aroma will be incredible.
Let cool completely in the pan before slicing into 16 squares. These taste remarkably like cookie butter in blondie form. The warmly spiced flavor deepens as they cool, and they taste even better the next day stored in an airtight container.