Preheat the oven to 325 degrees Fahrenheit. Grease a 9inch cake pan with butter.
In a large bowl, cream together the butter and granulated sugar until light and fluffy. 3/4 cup granulated sugar, 6 TBS unsalted butter
Add the eggs, one at a time, beating after each addition. 2 large eggs
Add in the milk, and lemon zest, and stir until combined. 2 Tbs milk, zest of one lemon
Stir in the flour, and baking powder until just combined. 1 1/3 cup all purpose flour, 1 tsp baking powder
Spoon the cake batter into the prepared pan, and smooth the top evenly.
In another bowl, mix together the ricotta cheese, lemon curd, and egg yolk.1 cup whole ricotta cheese, 1/2 cup lemon curd, 1 egg yolk
Spread the lemon ricotta mixture evenly over the top of the cake batter.
Sprinkle granola over the top of cake. 1/3 cup granola
Bake the cake for 35 to 45 minutes. Test the cake every couple minutes with a toothpick to see when it comes out clean. The cake is finished when the top is mostly solid with a few cracks.
Let the cake cool for 20 minutes in the pan. Then invert it to cool it completely on a serving plate.
Sprinkle the cake with powdered sugar, and top with whipped cream and fresh berries if desired. powdered sugar , fresh whipped cream , fresh berries
Enjoy cut in slices, and store leftovers covered in the fridge.