Glazed Blueberry Cake

Name: Glazed Blueberry Cake
Cuisine: American
Ingredients: Cake; 1 stick (8 tablespoons) unsalted butter, at room temperature; ⅔ cup granulated sugar; 2 large eggs; Zest of 1 lemon; 1½ teaspoons pure vanilla extract; ½ cup fine cornmeal; 1 teaspoon baking powder; ½ teaspoon fine sea salt; 2⅓ cups all-purpose flour, plus 2 tablespoons; ½ cup plain Greek yogurt; 2 cups blueberries; 1 tablespoon lemon juice; Icing; 1½ cups powdered sugar; 2 tablespoons fresh lemon juice; 1 tablespoon heavy cream