Ingredients
Equipment
Method
Bake the cookies
- Heat the oven to 350°F.
- Line one 18x13-inch rimmed baking sheet with parchment paper.
- In a large bowl, beat the softened unsalted butter, granulated sugar, and packed light brown sugar until creamy, about 2 minutes.
- Beat in the egg and vanilla extract until combined.
- In a medium bowl, whisk together the all-purpose flour, baking powder, ground cinnamon, ground nutmeg, and fine salt.
- Add the flour mixture to the butter mixture and mix on low just until no dry flour remains.
- Fold in the peeled, cored, finely diced apple.
- Drop level tablespoons of dough onto the baking sheet, spacing them about 2 inches apart.
- Bake in batches for 12 to 14 minutes, until the edges are set and the bottoms are lightly golden.
- Cool the cookies on the baking sheet for 5 minutes.
- Transfer the cookies to a wire rack and cool completely.
Make and apply the frosting
- Stir the confectioners' sugar and milk in a small bowl until smooth and thick enough to spread.
- Spread frosting over the cooled cookies.
- Let the frosting set for 15 minutes before serving.
Notes
For evenly tender cookies, finely dice the apple. Store frosted cookies in an airtight container in the refrigerator for up to 4 days; freeze unfrosted cookies for up to 2 months and frost after thawing. For a dairy-free option, use dairy-free butter and milk.
