Preheat and Prepare: Preheat your oven to 350°F (175°C). Grease and flour an 8-inch round cake pan or line it with parchment paper for easy removal.
Combine Dry Ingredients: In a medium bowl, whisk together the all-purpose flour, baking powder, and salt. Set aside.
Mix Wet Ingredients: In a separate large bowl, whisk together the eggs, yogurt, granulated sugar, vegetable oil, vanilla extract, and lemon zest (if using) until smooth and well combined.
Create the Batter: Gradually add the dry ingredients to the wet mixture, stirring gently until just combined. Avoid overmixing to maintain the cake’s light texture.
Bake to Perfection: our the batter into the prepared cake pan and smooth the top with a spatula. Bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
Cool and Serve: Allow the cake to cool in the pan for 10 minutes, then transfer it to a wire rack to cool completely. Dust with powdered sugar if desired, slice, and serve!