First, cream together the eggs, vanilla, and sugar for 5 minutes using a paddle attachment or whip using a kitchen utensil. The mixture should be a creamy pale yellow color after doing so.
Next, add in the zest of the lemon and orange. Mix into the batter.
After that, mix together the lemon juice, ornage juice, and olive oil. I put them in a liquid measuring cup. Then, slowly pour into the batter as you mix.
Once all the wet ingredients are mixed, start adding the flour, salt, and baking powder into the mix until creamy and well incorporated.
Lastly, fold the toasted slivered almonds into the batter.
Pour this cake batter in a 8 inch springform baking pan that has been oiled and in addition you can add a layer of parchment paper to ensure nothing sticks.
Bake in a 350 F oven for 45 minutes until toothpick comes out clean. Allow to cool to room temperature befoe topping off with powdered sugar and citrus slices for decor!