Preheat oven to 350 degrees F.
Spray a 9 by 13-inch baking pan with nonstick cooking spray.
In a large mixing bowl, combine butter, coffee, and brown sugar. Beat with an electric mixer on medium speed until light and fluffy. Add egg, almond extract, water, and cake mix and beat until smooth. Stir in almonds.
Turn batter into prepared pan and smooth to edges. Bake for 30 to 35 minutes until tester comes out clean. Cool completely before icing.
For icing: In a small mixing bowl, beat butter with powdered sugar, adding the sugar 1 cup at a time, until light and fluffy. Beat in espresso powder and chocolate syrup until smooth.
Ice brownies and cut into squares.