Pineapple Upside Down Cake - Cooking by the Book

Ingredients

• 1/2 medium pineapple, peeled, quartered lengthwise and cored
• 3/4 stick unsalted butter (6 Tbsps.)
• 3/4 cup packed light brown sugar
• 1 ½ cups all-purpose flour
• 1 ½ teaspoons. ground cardamom
• 2 teaspoons. baking powder
• ¼ teaspoon salt
• ¾ stick unsalted butter, softened (6 tablespoons)
• 1 cup granulated sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 1 tablespoon dark rum, plus 2 tablespoons, for sprinkling over cake
• ½ cup unsweetened pineapple juice