Texas Sheet Cake

1 cup butter
1 cup water
1/2 cup oil (I use coconut oil)
2 cups flour
2 cups sugar
3 tbsp cocoa
2 eggs
1/2 cup buttermilk*
1 tsp baking soda
1 tsp vanilla
1/2 tsp salt

Boil the butter, water, and oil together. Cool slightly. Add it to the flour, sugar, and cocoa. Mix the rest of ingredients and add to flour mixture. Bake at 350F for 20 mins. Spread with icing while warm.

*you can make your buttermilk by adding 2 tsp of vinegar or lemon juice to regular milk and letting it sit for 10 mins or so.

Icing
1/2 cup butter
3 1/2 cups powdered sugar
3 Tbsp. cocoa
1 tsp. vanilla
4-5 Tbsp. milk