Step 1

Prep: Preheat oven to 375°F. Spray a 15"x10" baking sheet lightly with nonstick spray and set it aside.

Step 2

Cake batter: In a large saucepan, bring the water and butter just to a boil. Remove from heat and whisk in the flour, sugar, eggs, sour cream, extracts, salt, and baking soda until smooth.

Step 3

Bake: Pour the batter to the prepared pan, place in the preheated oven and bake for 20-22 minutes, until the cake is golden brown. Set it on a rack to cool. While cake is baking, make the icing and toast the walnuts.

Step 4

Make the icing: Combine butter and milk in a medium saucepan. Bring to a boil, then remove from heat. Whisk in powdered sugar and almond extract. (If icing cools and thickens, just put back on low heat on the stove and whisk until pourable again.)

Step 5

Toast the walnuts: Pour walnuts in a medium sized skillet over medium heat. Increase heat slightly, and stir nuts often, until they become fragrant and slightly darker, about 5-7 minutes. Stir walnuts into the icing.

Step 6

Assemble: Pour the icing over the warm cake and let cool to set. Cut into squares. Serve & enjoy!