Instructions:
- Preheat oven to 350°F (175°C). Grease a 9-inch round cake pan thoroughly and line the bottom with a circle of parchment paper.
- In a large bowl, whisk together the sifted flour, sugar, baking powder, and salt until well combined.
- In a separate bowl, lightly whisk the eggs. Whisk in the milk, lemon juice, vanilla extract, and lemon zest.
- Slowly drizzle the olive oil into the wet mixture while whisking constantly until the mixture is slightly emulsified.
- Pour the wet mixture into the dry ingredients. Use a rubber spatula to gently fold everything together until just combined. Do not overmix; a few small lumps are acceptable.
- Pour the batter into the prepared pan. Bake for 40 to 45 minutes, or until a skewer inserted into the center comes out clean and the edges are light golden brown.
- Let the cake cool in the pan on a wire rack for 15 minutes before carefully inverting it onto the rack to cool completely.
- If using the glaze, once the cake is fully cooled, whisk together the sifted powdered sugar and lemon juice until smooth and pourable. Drizzle generously over the top.