Caramel Apple Upside-Down Cake

Ingredients

• 3/4 cup lightly packed brown sugar
• 1/4 cup Nellie's Free Range Unsalted Butter
• 1 teaspoon pure vanilla extract
• 1/2 teaspoon ground cinnamon
• Pinch of kosher salt
• 2 apples, peeled, cored, and cut into 1/2-inch thick slices
• Cooking spray
• 1 3/4 cups all-purpose flour
• 3/4 teaspoon baking powder
• 2 teaspoons ground cinnamon
• 1 teaspoon kosher salt
• 1/4 teaspoon ground nutmeg
• 1/2 cup (1 stick) Nellie's Free Range Unsalted Butter, softened
• 1 cup granulated sugar
• 1/2 cup lightly packed brown sugar
• 2 large Nellie's Free Range Eggs
• 3/4 cup milk