Dulce De Leche Sandwich Cookies are a total treat. Not only are they fun and festive, they combine all the wonders of caramel, sugar cookies, crunchy nuts and rich chocolate.
In a large bowl, whisk together butter, sugar and egg yolks.
As soon as the mixture is smooth, add baking powder and flour in small portions. Mix by hand or with a spatula until the dough is nice and crumbly.
Seperate the dough in half. Cover it with plastic wrap and roll it out into 1/4-inch thickness.
Using a cookie cutter, create your sandwich cookie halves. Use a knife to lift each cookie and move it onto a baking sheet. Bake at 350°F for 12-15 minutes. Let cool to room temperature.
Fill a piping or a ziplock bag with dulce de leche. Pipe the filling onto half of the cookies. Immediately cover dulce de leche with another cookie half to form a sandwich.
Melt chocolate chips in a microwave, stirring every few seconds to prevent burning. Add coconut oil into the melted chocolate to make the chocolate a bit runny.
Dip half of each cookie into chocolate and place the cookie on a baking mat. Sprinkle with crushed nuts and allow chocolate to harden at room temperature.