Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.
In a mixing bowl, combine the ricotta cheese, powdered sugar, vanilla extract, lemon zest, and ground cinnamon. Mix well until smooth and creamy.
In a separate bowl, whisk together the flour, baking powder, and salt. Gradually add the dry ingredients to the ricotta mixture, stirring until just combined.
Fold in the mini chocolate chips gently to distribute evenly throughout the dough.
Use a tablespoon to scoop out small balls of dough and place them on the prepared baking sheets, leaving space in between each cookie.
Lightly press down each cookie ball to flatten slightly. Brush the tops with the beaten egg for a golden finish.
Sprinkle a few additional mini chocolate chips on top of each cookie for decoration.
Bake in the preheated oven for 12-15 minutes, until the edges are lightly golden.
Once done, remove from the oven and let cool on a wire rack.
Before serving, sprinkle the chopped pistachios on top for an extra crunch.
Notes
For an extra crunch, sprinkle chopped pistachios on top before serving.