Caramel Apple Cupcakes

Ingredients

• 1 teaspoon ground cinnamon
• 2 large eggs
• 1 cup all-purpose flour
• 3/4 cup granulated sugar
• 1/2 teaspoon baking soda
• 1 1/2 cups powdered sugar
• 1/2 cup heavy cream
• 1 teaspoon vanilla extract
• 2 1/2 tablespoons unsalted butter
• 1 1/2 teaspoons vanilla extract
• 1/2 teaspoon kosher salt
• 2 tablespoons water
• 2 tablespoons light corn syrup
• 1/3 cup apple cider
• 1/3 cup oil
• 2/3 cup cake flour*
• 18 tablespoons unsalted butter, (softened)
• 3/4 cup light brown sugar, (lightly packed)
• 1 teaspoon baking owder
• 1 tablespoon lemon zest ((zest from about 1 lemon))
• 1 1/2 cup shredded apple**
• 3/4 teaspoon anywhere from 3/4 kosher salt ((up to 1 teaspoon, to taste))
• optional: additional pinch of kosher salt, (to taste)
• 1/3 cup salted peanuts, (finely chopped)