Caramel Apple Cookie Sandwiches



Apple Cinnamon Oatmeal Cookies:
1 green apple peeled, diced into ¼ inch cubes
1 cup butter, softened
1 cup sugar
1 cup brown sugar, packed
2 large eggs
1½ teaspoons vanilla extract
2½ cups flour
2½ cup oats, old fashioned or quick cooking
2 teaspoon ground cinnamon
1 teaspoon baking powder
1 teaspoon baking soda {15 Cool Uses for Baking Soda}
1 teaspoon salt
½ teaspoon cloves
¼ teaspoon nutmeg

Brown Sugar and Cinnamon Buttercream:
2 sticks unsalted butter softened
½ cup light brown sugar, packed
1 teaspoons ground cinnamon
4-6 cups powdered sugar
1 teaspoon vanilla extract
¼ teaspoon salt
¼ cup of milk or half and half, plus more if needed
salted caramel for drizzling