01 -
Preheat the oven to 350°F (175°C). Line a large baking sheet with parchment paper or a silicone baking mat and set aside.
02 -
In a medium bowl, whisk together the flour, cinnamon, baking soda, salt, nutmeg, ginger, and cloves until well combined. Set aside.
03 -
In the bowl of a stand mixer fitted with the paddle attachment, beat together the butter, light brown sugar, and granulated sugar until light and creamy, about 2-3 minutes. Scrape down the sides of the bowl with a spatula as needed.
04 -
Add the finely grated carrots to the butter mixture and mix until well combined. Then add the egg and vanilla extract and mix until completely incorporated, scraping down the sides of the bowl as needed.
05 -
Add the dry ingredients to the wet ingredients and mix on low speed until just combined. Do not overmix. Add the old fashioned oats and mix briefly until incorporated. If using, fold in the raisins and/or chopped nuts by hand.
06 -
Using a cookie scoop or tablespoon, measure out 1 1/2 tablespoons of dough per cookie. Place the dough balls on the prepared baking sheet, spacing them about 2 inches apart. Bake for 10-12 minutes or until the edges are golden brown but the centers are still slightly soft. Remove from the oven and let cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.
07 -
While the cookies are cooling, make the filling. Place the butter in a medium saucepan over medium heat. Melt the butter, stirring frequently. Continue cooking as the butter foams, then begins to turn golden and smell nutty. Watch carefully as it browns to avoid burning. This process takes about 5-7 minutes. Once browned, immediately transfer to a heat-proof bowl, making sure to scrape in all the browned bits. Refrigerate for 30 minutes or until resolidified but still soft.
08 -
In the bowl of a stand mixer fitted with the paddle attachment, beat the softened brown butter and room temperature cream cheese together until smooth and creamy. Add the vanilla extract and salt and mix again. Gradually add the confectioner's sugar, about 3/4 cup at a time, mixing well between additions and scraping down the sides of the bowl as needed, until the filling is smooth and creamy.
09 -
Once the cookies are completely cool, turn half of them upside down. Pipe or spread a generous amount of the brown butter cream cheese filling onto the flat side of each upside-down cookie. Top with another cookie, flat side down, to create a sandwich. Press gently to spread the filling to the edges.
10 -
Place the assembled sandwich cookies in the refrigerator for at least 30 minutes to set the filling. For the best flavor and texture, let them come to room temperature for about 15 minutes before serving.