Cookies:
1 cup unsalted butter, softened
1 cup granulated sugar
2 large eggs
1 Tablespoon vanilla extract
3 cups all-purpose flour
3 teaspoons baking powder
2 teaspoons ground cinnamon
½ teaspoon sea salt
Frosting:
4 ounces cream cheese, softened
8 Tablespoons unsalted butter, softened
2 ½ cups powdered sugar
1 teaspoon vanilla extract
1-2 teaspoons milk or cream, as needed
Ground cinnamon, for sprinkling