1½ cups extra-virgin olive oil, plus more for pan
3 large eggs
1¼ cups (250 g) plus 1 Tbsp. granulated sugar
1¼ cups whole milk
2 tsp. vanilla extract
Zest and juice of 2 lemons; plus more zest for serving (optional)
2 cups (250 g) all-purpose flour
1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt
½ tsp. baking powder
½ tsp. baking soda
Powdered sugar (for serving)
A 9″-diameter springform pan
Preheat oven to 350°. Lightly oil pan with a pastry brush. Line bottom with a parchment paper round and brush parchment with oil. Whisk eggs, 1½ cups oil, and 1¼ cups sugar in a medium bowl until smooth. Add milk, vanilla, and zest and juice of 2 lemons and whisk to combine.
Whisk flour, salt, baking powder, and baking soda in a large bowl to combine. Make a well in the center and gradually pour egg mixture into well. Whisk, using circular motions to slowly incorporate egg mixture, until batter is mostly smooth (some lumps are okay). Scrape batter into prepared pan and smooth surface. Sprinkle remaining 1 Tbsp. sugar over.
Bake cake until top is golden brown and a tester inserted into the center comes out clean, about 50 minutes. Transfer pan to a wire rack and let cake cool before unmolding.
Just before serving, dust cake with powdered sugar and top with more lemon zest if you have it.