Salted Caramel Apple Upside Down Cake

Bahan-bahan (8 porsi)

• 1 2/3 cup all purpose flour
• 1/2 cup brown sugar, lightly packed
• 1 tablespoon baking powder
• 1/2 teaspoon ground cinnamon
• 1 teaspoon kosher salt, divided, plus more to taste
• 2 large eggs
• 6 tablespoons melted unsalted butter
• 2/3 cup milk
• 1 tablespoon vanilla extract
• 2/3 cup granulated sugar
• 5 tablespoons unsalted butter
• 3 g ranny smith apples, peeled, cored, and sliced into thin half moons
• Vanilla ice cream, to serve