Step 1

Bring 1 cup butter and 1 cup water to a boil in a saucepan.

Step 2

Remove from heat and whisk in flour, baking soda, salt, sugar, eggs, sour cream and almond extract until smooth.

Step 3

Pour into a greased 15×10 baking pan. Bake at 375 degrees for 20-22 minutes or until a toothpick inserted in center comes out clean. Cool in pan on a wire rack for 20 minutes.

Step 4

While cake is cooling, make frosting.

Step 5

Combine butter and milk in a saucepan; cook over low heat until butter melts. Bring to a boil over medium heat.

Step 6

Remove from heat and add powdered sugar and almond extract; beat at medium speed with an electric mixer until spreading consistency. Stir in walnuts (optional).

Step 7

Spread frosting on top of cake.