Prepare the Cookie Dough:

1. Mix Dry Ingredients: In a medium bowl, whisk together the flour, baking powder, and ground cinnamon. Set aside.
2. Cream Butter and Sugar: In a large bowl, beat the softened butter and granulated sugar together with an electric mixer until light and fluffy.
3. Add Wet Ingredients: Add the egg yolk, honey, and vanilla extract to the butter mixture. Continue to beat until well combined.
4. Combine Wet and Dry Ingredients: Gradually add the dry ingredients to the wet ingredients, mixing until a dough forms. The dough should be soft but not sticky.

Shape and Bake the Cookies:

5. Roll the Dough: Divide the dough into two equal portions. Roll each portion between two sheets of parchment paper to about ¼-inch thickness.
6. Cut the Cookies: Use a cookie cutter to cut the dough into circles, about 2 inches in diameter. Place the cookies on a baking sheet lined with parchment paper.
7. Bake the Cookies: Preheat the oven to 350°F (175°C) and bake the cookies for 15-20 minutes, or until they are lightly golden around the edges. Allow them to cool completely on a wire rack.

Prepare the Cream Filling:

8. Make the Filling: In a medium bowl, beat the cream cheese, softened butter, honey, powdered sugar, and vanilla extract until smooth and creamy.
9. Add the Nuts: Fold in the finely chopped walnuts and pistachios until evenly distributed throughout the cream filling.

Assemble the Cookies:

10. Fill the Cookies: Once the cookies have cooled, spread a generous amount of cream filling on the flat side of one cookie. Top with another cookie, pressing gently to sandwich them together.
11. Garnish the Cookies: If desired, drizzle honey over the top of the cookies and sprinkle with additional crushed pistachios or walnuts for extra flavor and decoration.