Almond Cake Without Baking Powder

Beat softened butter, sugar, and powdered sugar together in a large bowl with a mixer until light and creamy.

Add eggs one at a time, mixing well after each addition.

In a separate bowl, combine almond flour, cornstarch, and regular flour.

Fold the dry ingredients into the butter mixture gently, using a spatula and lifting from the bottom.

Stir in the orange zest and a touch of vanilla extract with care.

Transfer the batter to a baking pan lined with parchment paper or lightly oiled, and smooth the top with a spatula.

Generously sprinkle sliced almonds over the surface.

Bake in a preheated 280°F oven for about an hour until golden and cooked through.