Preheat your oven to 350°F (175°C) and prepare a 9" round cake pan by lining it with parchment and buttering it.

In a medium bowl, sift together almond flour, all-purpose flour, baking powder, and salt.

In a mixer, beat the softened butter and granulated sugar until light and fluffy, about 2 minutes.

Add eggs one at a time to the butter and sugar mixture, mixing well after each addition, followed by the almond and vanilla extracts.

Gradually mix the dry ingredient mixture into the wet batter until just combined.

Transfer the batter to the prepared cake pan and smooth into an even layer.

Toss the chopped pears with lemon juice and slightly salt, then evenly distribute over the batter.

Sprinkle a generous amount of granulated sugar over the top before baking.

Bake for 40 to 45 minutes, or until a toothpick comes out clean from the center.

Allow the cake to cool in the pan for 20 minutes before transferring it to a wire rack.

Dust with confectioners' sugar before serving for an elegant finish.