Gooey Butter Cake Squares Recipe - Los Angeles Times

Ingredients

• 1/2 cup (1 stick) unsalted butter, at room temperature, plus more for the pan
• 1 1/4 cups all-purpose flour, plus more as needed
• 2/3 cup granulated sugar
• 3 tablespoons cornstarch
• 1 1/2 teaspoons Diamond Crystal kosher salt
• 3/4 teaspoon baking powder
• 1/4 teaspoon baking soda
• 1 large egg, room temperature
• 1 tablespoon vegetable oil
• 1 pound cream cheese, room temperature
• 3 1/2 cups powdered sugar
• 1 teaspoon pure vanilla extract
• Finely grated zest of 1 orange, plus more
• 2 large eggs, room temperature
• Flaky sea salt (optional)