Preheat your oven to 350°F (175°C) and grease a 9-inch round cake pan.
Step 2: Mix Dry Ingredients
In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.
Step 3: Cream Butter and Sugar
In a large mixing bowl, beat the softened butter and granulated sugar together until light and fluffy, about 3-4 minutes.
Step 4: Add Eggs and Ricotta
Add the eggs, one at a time, beating well after each addition. Then, mix in the ricotta cheese, limoncello, lemon zest, and lemon juice until well combined.
Step 5: Combine Dry and Wet Ingredients
Gradually add the dry ingredient mixture to the wet ingredients, mixing until just combined. Be careful not to overmix.
Step 6: Bake the Cake
Pour the batter into the prepared cake pan and smooth the top. Bake for 30-35 minutes or until a toothpick inserted in the center comes out clean. Let the cake cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.
Step 7: Make the Frosting
In a mixing bowl, beat the heavy whipping cream until soft peaks form. Gradually add the powdered sugar, vanilla extract, and limoncello, continuing to beat until stiff peaks form.
Step 8: Frost the Cake
Once the cake is completely cool, spread the whipped cream frosting over the top and sides of the cake. Garnish with additional lemon zest for a beautiful presentation.