01 - Preheat oven to 350°F. Grease a 9-inch springform pan and line the bottom with parchment paper.
02 - In a medium bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.
03 - In a large bowl, beat butter and sugar together until light and fluffy, about 3 minutes.
04 - Add eggs one at a time, beating well after each addition.
05 - Mix in ricotta cheese, lemon zest, lemon juice, and vanilla extract until well combined.
06 - Gradually add dry ingredients to the wet mixture, mixing until just combined. Do not overmix.
07 - Pour batter into the prepared pan and smooth the top.
08 - Sprinkle sliced almonds evenly over the batter, then sprinkle with 2 tablespoons of sugar.
09 - Bake for 40–45 minutes, or until a toothpick inserted into the center comes out clean and the top is golden.
10 - Let the cake cool in the pan for 15 minutes, then release the springform and cool completely on a wire rack. Serve plain, or with a dusting of powdered sugar if desired.