01 - Preheat oven to 350°F. Grease a 9-inch springform pan and line bottom with parchment paper.
02 - In a large bowl, whisk together ricotta, eggs, olive oil or melted butter, vanilla, lemon zest, and lemon juice until smooth.
03 - In a separate bowl, whisk sugar, flour, baking powder, and salt until well blended.
04 - Gradually fold dry ingredients into wet mixture until just combined. Do not overmix.
05 - Pour batter into prepared pan, smooth top, and sprinkle sliced almonds evenly. Bake for 35-40 minutes until toothpick inserted in center comes out clean and almonds are golden.
06 - Cool in pan for 15 minutes, then release springform and transfer to wire rack. Cool completely before dusting with sugar.