Texas Sheet Cake
Cake:
- 2 cups flour
- 2 cups sugar
- ½ tsp salt
- 1 tsp baking soda
- ½ cup vegetable oil
- ½ lb butter
- 1 cup water
- ¼ cup cocoa powder
- 2 eggs
- ½ cup sour cream
- 1 tsp vanilla
Frosting:
- 4 oz butter
- 6 Tbsp milk
- ¼ cup cocoa powder
- 1 tsp vanilla
- 1 lb powdered sugar
For the cake:
- Place the flour, sugar, salt, and baking soda in a large bowl and whisk to combine. Set aside.
- Place water and oil in a medium sauce pot. Sift the cocoa powder over the water and whisk to combine. Break the butter into pieces and add to the pot. Bring to a boil over medium heat, whisking occasionally.
- Remove from heat when the butter is melted and whisk in the sour cream until completely incorporated. Add the eggs and vanilla to the pot and whisk until combined.
- Add to the dry mix and whisk until no lumps remain. Pour into a well oiled, unlined 9×13 4 inch deep pan and bake at 325°F for about 45 minutes. Cake is done when a toothpick inserted in the center comes out clean. Frost as soon as cake is removed from the oven and still hot.
For the frosting:
- Combine butter and milk in a small sauce pot. Cook over low heat just until the butter is melted.
- Sift the cocoa over the milk mixture and whisk to combine. Continue to cook over low heat, stirring constantly, until very hot.
- Transfer hot ingredients to a mixer bowl and add the vanilla and powdered sugar. Using the whisk attachment, beat on medium speed until smooth.
- Pour the hot frosting evenly over the hot cake and let it sit undisturbed until set.
- Chill the frosted cake until completely firm.