Preheat the oven to 180 (350f) and prep an 8-inch springform pan with cooking spray and parchment paper.
In a large bowl, add the olive oil, eggs, sugar, sour cream, lemon zest, lemon juice, vanilla extract, salt, and milk and mix with a whisk until well combined.
Add the flour, and baking soda and mix it until the batter is just combined and there are no lumps of flour visible. Do not overmix.
Pour the batter into the prepared baking pan and bake the cake in a 180c (350f) preheated oven for about 45 minutes or until a toothpick inserted into the cake comes out clean with a few moist crumbs.
Allow the cake to chill at room temperature until it's not too warm, top it with powdered sugar, and serve!
