This simple, rustic Italian-style lemon polenta cake recipe will be a keeper in your recipe file! It has a lovely crunch of cornmeal and lots of fresh lemon.
Preheat oven to 350 degrees (175 C) and place an oven rack in the center of the oven.
Line the bottom of an 8-inch cake pan with parchment paper to fit and lightly brush the bottom and sides of the pan with oil or cooking spray.
Whisk 1 cup polenta, ¾ cup all-purpose flour, 1½ teaspoons baking powder, and ½ teaspoon fine sea salt in a bowl and set aside.
Beat 2 large eggs, 2 egg whites (1/4 cup) and 1 cup sugar in a heavy-duty stand mixer fitted with the paddle attachment on medium-high speed until pale and creamy, 4-5 minutes. On low speed, mix in ¼ cup olive oil or neutral oil such as canola or avocado, ½ cup whole milk plain yogurt or sour cream, 2 tablespoons grated fresh lemon zest and 2 tablespoons fresh lemon juice. l
Stir the dry ingredients into the egg misture until just blended. Pour the batter into the pan and bake 35-40 minutes, or until the top feels firm but springy, and a toothpick inserted in the center of cake comes out clean. Cool in the pan 10 minutes, then run a dull knife around the edge of the pan to loosen the cake. Invert onto a rack to cool completely.
Sift powdered sugar over the cake and cut into wedges to serve.
Notes
The cake keeps well for several days at room temperature.
To freeze: Cool the cake completely, then wrap in several layers of plastic wrap and freeze for up to 1 month. Defrost at room temperature.
In place of neutral oil, I sometimes substitute an Italian lemon olive oilwhen I feel like splurging - it tastes amazing!