Iced Oatmeal Cookies {Better Than Store Bought}

Ingredients

• ½ cup (1 stick) unsalted butter (softened to room temperature)
• ¾ cup packed dark brown sugar
• ¼ cup granulated sugar
• 1 egg
• 1 teaspoon vanilla extract
• 1 cup all-purpose flour
• 1 teaspoon cinnamon
• ½ teaspoon baking soda
• ¼ teaspoon salt
• 1 ½ cups rolled oats
• 1 cup powdered sugar
• 2 tablespoons milk
• ½ teaspoon vanilla extract