A cake recipe for a 11x15x2 in sheet cake?

For the Cake:

- 1 3/4 cups all-purpose flour

- 1 3/4 cups granulated sugar

- 1/2 cup unsweetened cocoa powder

- 1 1/2 teaspoons baking powder

- 1 1/2 teaspoons baking soda

- 1 1/2 teaspoons salt

- 2 cups cold water

- 1/2 cup vegetable oil

- 2 eggs

- 2 teaspoons vanilla extract

For the Frosting:

- 1 cup unsalted butter, softened

- 3 cups powdered sugar

- 1/4 cup unsweetened cocoa powder

- 1/2 teaspoon vanilla extract

- 3-4 tablespoons milk, or as needed

Instructions:

To Make the Cake:

1. Preheat the oven to 350°F (175°C). Grease and flour an 11x15x2 inch sheet cake pan.

2. In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt.

3. In a separate bowl, whisk together the water, oil, eggs, and vanilla extract.

4. Add the wet ingredients to the dry ingredients and mix until just combined. Do not overmix.

5. Pour the batter into the prepared pan and bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean.

6. Let the cake cool completely in the pan before frosting.

To Make the Frosting:

1. In a large bowl, cream together the butter and powdered sugar until light and fluffy.

2. Add the cocoa powder and vanilla extract and mix until combined.

3. Add the milk, one tablespoon at a time, until the frosting reaches a spreading consistency.

To Assemble the Cake:

1. Once the cake has cooled completely, spread the frosting evenly over the top.

2. Cut into squares and serve.

Enjoy your delicious chocolate sheet cake!