01 -
Lightly butter a 9-inch springform pan and line the bottom with parchment. Preheat oven to 375°F (190°C).
02 -
Using a stand mixer with a whisk attachment, beat 2 eggs and 1 cup sugar on high speed for 5 minutes, or until the mixture is light in color and thick.
03 -
Reduce speed to low and add 1 cup sour cream, 1/2 cup oil, 1 tsp vanilla extract, and 1/4 tsp salt. Whisk until well combined.
04 -
In a separate bowl, whisk together 2 cups flour and 2 tsp baking powder. Gradually add the dry mixture to the batter, 1/3 at a time, whisking to incorporate after each addition. DO NOT overmix. Finally, add 1 Tbsp lemon juice and 1/2 Tbsp lemon zest.
05 -
Rinse the blueberries and drain well. In a medium bowl, toss blueberries with 1/2 Tbsp cornstarch and 1 tsp lemon juice, stirring until coated evenly and no dry cornstarch remains.
06 -
Pour half of the batter into the prepared springform pan and spread it evenly. Top with half of the blueberries. Spread the remaining batter over this layer, then sprinkle the remaining blueberries evenly on top, gently pressing them halfway into the batter.
07 -
Bake in the preheated oven for 45 to 55 minutes, or until a toothpick inserted into the center comes out clean. Let the cake rest in the pan for 15-20 minutes, then remove the springform ring and cool to room temperature or slightly warm.
08 -
Optionally, dust the top of the cake with powdered sugar before serving.