Diy “Oreo” Cookies

For the cookies:
Preheat oven to 350u0b0F (180u0b0C). Line a baking sheet or two with parchment paper. Set aside.
In a medium bowl mix together flour, baking powder, cocoa powder, sugar and salt. Set aside. In another bowl beat butter with an egg until well combined and fluffy.
Gradually add mixed dry ingredients into butter and egg mixture and mix until little crumbs forms. Add water and mix until it comes together into a nice dough. Moisten your hands with some water, take a teaspoon of batter, roll it into a ball, put on the baking sheet and repeat with the remaining batter leaving space between balls. Moisten your hands if needed and flatten balls of dough, using your fingers to make smooth edges. Bake 8-10 minutes. Take pans out of the oven and let cookies cool on the pans or on a cooling rack.
For the filling:
Put the chocolate into a microwave-safe bowl. Melt the chocolate in the microwave, heating it for 30 seconds at a time and stirring before each additional 30 second increment. Make sure to stop once it is almost smooth.
In a large bowl beat the butter with condensed milk and melted chocolate. Mix in icing sugar and vanilla and stir until thoroughly combined.
To assemble cookies, take a cooled cookie, spread the flat side of it with a teaspoon of filling and top it with another cookie (flat side towards the filling). Repeat with remaining cookies and filling. Enjoy your meal!