01 - Preheat the oven to 350°F. Grease and line an 8-inch round cake pan with parchment paper.
02 - In a medium bowl, whisk together all-purpose flour, almond flour, baking powder, and salt. Set aside.
03 - In a large bowl, cream together the butter and granulated sugar until light and fluffy, about 2–3 minutes.
04 - Beat in the eggs one at a time, mixing well after each addition. Stir in almond and vanilla extracts.
05 - Add the dry ingredients to the wet mixture in two additions, alternating with the milk. Mix until just combined; do not overmix.
06 - Pour the batter into the prepared pan and smooth the top. Sprinkle sliced almonds evenly over the batter. Bake for 30–35 minutes, or until a toothpick inserted into the center comes out clean and the top is golden brown.
07 - Cool in the pan for 10 minutes, then transfer to a wire rack to cool completely. Dust with powdered sugar before serving, if desired.