Preheat the oven to 350°F (175°C) and grease a 9-inch round cake pan. Line the bottom with parchment paper for easy removal.
In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy using an electric mixer.
Add the ricotta cheese, eggs, lemon zest, lemon juice, and vanilla extract to the bowl. Mix on medium speed until the mixture is well combined.
In a separate bowl, whisk together the flour, baking powder, baking soda, and salt. Gradually add this dry mixture to the wet ingredients and stir until just combined. Do not overmix.
Gently fold in the blueberries, being careful not to crush them.
Pour the batter into the prepared cake pan and smooth the top with a spatula.
Bake in the preheated oven for 35 to 40 minutes, or until the cake is golden brown and a toothpick inserted into the center comes out clean.
Allow the cake to cool in the pan for about 10 minutes before transferring it to a wire rack to cool completely.
Once cooled, dust the top with powdered sugar and garnish with fresh lemon zest if desired before slicing.
Notes
Dust with powdered sugar and garnish with fresh lemon zest for an elegant touch.