1/2 cup flour
1 1/2 tablespoons ground cinnamon
1/4 - 1/2 teaspoons ground red pepper (depending on how much spice you want)
10 tablespoons unsalted butter
1 1/4 cups sugar
3/4 cup plus 2 tablespoons unsweetened cocoa powder
1/4 teaspoon salt
1/2 teaspoon vanilla extract
2 large eggs

3 cups powdered sugar
2 sticks unsalted butter (16 tablespoons), room temperature
pinch of salt
2 teaspoons vanilla extract
1 tablespoon heavy cream or milk
1 1/2 tablespoons ground cinnamon