Preheat the Oven:
Set oven to 350°F (175°C). Grease and line a 9-inch springform pan.
Mix the Dry Ingredients:
In a bowl, whisk flour, baking powder, salt, and espresso powder together.
Prepare the Wet Ingredients:
Beat ricotta, sugar, and butter until creamy. Add eggs, one at a time, mixing well.
Combine Everything:
Gradually add dry ingredients to the ricotta mixture, alternating with milk. Stir until smooth.
Bake the Cake:
Pour batter into the pan. Bake for 45-50 minutes or until a toothpick comes out clean.
Make the Coffee Glaze (Optional):
Whisk espresso powder, powdered sugar, and milk until smooth.
Cool and Glaze:
Let cake cool for 10 minutes, then drizzle with glaze.
Slice and Serve:
Cut into generous pieces and enjoy.