Meyer Lemon Ricotta Cake with Almonds (no flour)

unsalted butter, softened

sugar

vanilla bean, split and seeds scraped (or 1 tsp vanilla extract)

lemon zest ( I used 2 large Meyer lemons)

lemon juice from 1/2 lemon

eggs, at room temperature, separated

almond meal

ricotta

flaked almonds, for the top

confectioners' sugar, for dusting