Preheat the oven to 325 degrees F.
Grease bottom and sides of a springform pan
In a bowl, combine flour, almond flour, baking powder and salt. Stir to combine. set aside
In a glass batter bowl, melt the butter in the microwave
Add the sugar to the melted butter and whisk to combine
Add the eggs and whisk to combine.
Add the lemon zest, vanilla and almond extracts
Then, with a rubber spatula, stir in the flour mixture until well combined
Pour batter into the prepared springform pan and top with the sliced almonds and sprinkle with the sugar.
Bake for about 30-35 minutes. Cake is done when toothpick inserted in the middle comes clean.