Preheat your oven to 350°F first.
Grease the cake pan with butter generously.
Line the bottom with parchment paper.
This prevents the cake from sticking.
Set the prepared pan aside for later.
Beat butter and sugar until light and fluffy.
This takes about 3 minutes of mixing.
Add eggs one at a time slowly.
Mix well after each egg addition.
Stir in ricotta cheese and vanilla extract.
Add lemon zest for extra flavor.
Mix until everything is well combined.
Whisk flour, baking powder, and salt together.
Do this in a separate bowl.
This ensures even distribution of leavening agents.
Add dry ingredients to wet ingredients gradually.
Mix on low speed until just combined.
Don't overmix or cake becomes dense.
Gently fold in blueberries with a spatula.
Save a few blueberries for topping.
Pour batter into your prepared pan evenly.
Sprinkle remaining blueberries on top for decoration.
Bake for 45-50 minutes until golden.
Insert a toothpick to check doneness.
It should come out mostly clean.
Let the cake cool for 10 minutes.
Then transfer to a cooling rack completely.
Dust the cooled cake with powdered sugar.
Slice and serve at room temperature.
Enjoy with coffee or tea!