Super Moist Pineapple Cake

Ingredients

• 4 large eggs
• 1 teaspoon pure vanilla extract
• 2 cups (10 ounces) all purpose flour
• 1 teaspoon baking powder
• ¾ cup granulated sugar
• optional: fresh whipped cream for serving
• 2 tablespoons cornstarch
• 7 ounces unsalted butter, room temperature
• ¼ teaspoon kosher salt
• 1 20-ounce can crushed pineapple (do not drain - see note)
• zest of 1 lemon