Prep your pan and oven: Preheat your oven to 350°F (175°C) and position a rack in the center. Grease a 9-inch (23 cm) springform pan and line the bottom and sides with parchment paper, or lightly dust with flour after greasing.
Mix the dry ingredients: In a medium bowl, whisk together the flour, cornmeal, baking powder, baking soda, and salt. Set aside.
1 ¼ cups unbleached all-purpose flour, ⅔ cup yellow cornmeal, 2 teaspoons baking powder, ½ teaspoon baking soda, ¾ teaspoon salt
Cream the butter, sugar, and citrus zest: In the bowl of a stand mixer fitted with the paddle attachment, beat the butter, sugar, lemon zest, and orange zest on medium speed until light, pale, and fluffy — about 5 minutes.
1 cup granulated sugar, 1 medium Zest of 1 lemon, 10 tbsp Unsalted butter , 1 medium Zest of 1 orange
Add the eggs one at a time: Crack in one egg, beat for about 30 seconds until fully incorporated, then repeat with the second. This keeps the batter smooth and helps prevent curdling.
2 large eggs
Add the ricotta: Mix in the ricotta and beat for 1 more minute until the batter is smooth and creamy.
1 cup ricotta cheese