Step 1

Preheat the oven to 350º Fahrenheit.

Step 2

Grease a 10x15” jelly roll pan and set aside.

Step 3

Mix the flour and sugar in a large bowl and set aside.

Step 4

Add the oil, butter and water into a saucepan. Turn on medium high and bring to a boil.

Step 5

Once the mixture starts boiling, pour it over the flour mixture. Use a hand mixer to beat until well blended.

Step 6

Add the eggs, cinnamon, baking soda and buttermilk. Mix until well blended, scraping the sides of the bowl as needed.

Step 7

Pour into the prepared pan and bake for 20-30 minutes or until the cake pulls away from the sides of the pan and the center tests done.

Step 8

Add the butter, milk and 4 cups of powdered sugar into a small bowl. Use a hand mixer to beat until the frosting is creamy and completely mixed. Add more powdered sugar as needed to get to the consistency you’d like.

Step 9

Spread the frosting on the warm cake.