01 -
Heat the oven to 350℉. Grease and line an 8-9 inch springform tin, or a regular round cake tin instead.
02 -
Grab a large bowl. Using a whisk or a handheld mixer (or serious hand power), whip the egg yolks and sugar until airy and light. Mix in the orange juice, orange zest, oil, and almond extract. Whisk together for a couple of minutes until smooth.
03 -
Stir in the baking powder and almond flour until the mixture is smooth and lump-free.
04 -
Whip the egg whites in a clean, oil-free bowl until they hold firm peaks. Gently fold this airy foam into the batter. Tip: If there’s grease or egg yolk in your whites, they won’t whip. So make sure to clean everything with vinegar before starting.
05 -
Pour the batter into your prepped tin and smooth out the top. Scatter the almond slices over the surface. Bake for 40 minutes, or until a skewer inserted in the center comes out with just a few crumbs clinging to it.
06 -
Cool in the tin for 10 minutes first. If using a springform pan, release the sides. For regular pans, turn the cake onto a wire rack using an inverted plate. Flip it back over with another plate so it sits upright. Dust with powdered sugar and enjoy!