Preheat oven to 375 degrees F. Grease a 15"x10"x1" baking pan.
In a medium sized saucepan, bring butter and water to boil.
In a large bowl, combine flour and sugar. Mix. Add in eggs, sour cream, almond extract (or vanilla), & baking soda. Slowly pour in the boiling butter/water mixture. Stir until smooth.
Pour into greased baking pan. Bake at 375 degrees F. for 20-22 minutes or until golden brown & toothpick inserted in center comes out clean. Cool cake for 20 minutes.
For Frosting: In a mixing bowl add powdered sugar & almond extract & set aside.
In a medium sized saucepan, add ½ cup butter and ¼ cup milk. Bring to a boil. Remove from heat, and pour into bowl of powdered sugar/almond extract. Stir until smooth and combined. Spread over warm cake. (If frosting is too thick add a little extra milk)
Recipe by THE SEMISWEET SISTERS at http://www.thesemisweetsisters.com/2015/09/09/white-texas-sheet-cake/