Preheat oven to 375 degrees Fahrenheit and grease a 10-inch round cake pan.
Beat egg yolks with sugar for about 3 minutes in a large bowl until light yellow. Add the butter and beat for another minute. Beat in the orange juice.
Mix dry ingredients (excluding almonds) in another bowl and blend into the yolk mix.
Beat egg whites separately until they form soft peaks, then fold them into the batter.
Pour batter into cake pan and top with almonds.
Bake cake for one hour and let cool before serving.