Easy Upside Down Cake - Zest Plate

Ingredients

• 1/4 cup (4 Tbsp; 56g) unsalted butter, melted.
• 1/2 cup (100g) packed light or dark brown sugar.
• 8–10 pineapple slices.
• 15–20 maraschino cherries.
• 1 and 1/2 cups (177g) cake flour, spooned & leveled.
• 1 teaspoon baking powder.
• 1/4 teaspoon baking soda.
• 1/2 teaspoon salt.
• 6 Tablespoons (85g) unsalted butter, softened to room temperature.
• 3/4 cup (150g) granulated sugar.
• 2 large egg whites, at room temperature.
• 1/3 cup (80g) sour cream, at room temperature.
• 1 teaspoon pure vanilla extract.
• 1/4 cup (60ml) pineapple juice, at room temperature.
• 2 Tablespoons (30ml) milk, at room temperature.