These Iced Oatmeal Cookies are a classic for good reason--they're soft, chewy, filled with spiced flavor, and topped with a sweet vanilla icing. Plus they're easy to make. Once you make a batch of these cookies, they will become part of your standard cookie recipe repertoire.
Preheat the oven to 375°F. Grease two large baking sheets orline with parchment paper.
In a large bowl, beat the butter and brown sugar with anelectric mixer on medium speed until light and fluffy, about 3 minutes. Beat inthe eggs, one at a time, beating well after each addition and scraping does thesides of the bowl when necessary. Beat in the vanilla. Reduce the mixer speedto low and beat in the baking soda, salt, cinnamon, allspice, and nutmeg justuntil blended, then beat in the oats and flour just until combined. Using a woodenspoon, stir in the nuts.
Drop the batter by heaping tablespoonfuls onto the preparedbaking sheets, spacing about 2 inches apart. Using the back of a spoon, flattenthe dough mounds slightly.
Bake until browned around the edges, about 10 minutes.Transfer the cookies to a wired rack to set over a sheet of waxed paper orparchments and let cool completely.
Make the icing: In a small bowl, mix the powdered sugar andbutter. Add the vanilla, then the milk, and blend until smoot and mixture has agood spreading consistency. Spread the cookies lightly with the icing.
Notes
Store the cookies in an airtight container at cool room temperature for up to 4 days. Layer them between sheets of parchment or waxed paper so they won't stick together.