In a large saucepan, bring butter and water to a boil.
Remove from heat and let cool for 5 minutes.
Stir in flour, sugar, eggs, sour cream, extracts, salt, and baking soda until smooth.
Pour batter into a greased 10x15-inch baking pan.
Bake in the preheated oven for 20 to 22 minutes, or until cake is golden brown and tests done.
Combine butter and milk in a saucepan. Bring to a boil. Then remove from heat.
Mix in sugar and extract. Spread frosting over the cake while it is still warm.
The calories shown are based on the cake being cut into 20 pieces, with 1 serving being 1 slice of cake. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information.**