In separate mixing bowl, whisking buttermilk, vegetable oil, eggs, and vanilla extract.
Adding wet ingredients to dry ingredients and mix until well combine
Gradually adding hot water to mixture and mix until well combine
Pour batter evenly into prepared cake pans.
Bake for 35 min
Removing cake from oven and let it cool in the pans for 10 min.
Removing cake from pans and let cool completely on wire racks.
To preparing frosting, beating soft butter with an electric mixer until creamy.
Gradually adding powder sugar, cocoa powder, milk, vanilla extract, also salt to butter, and beating until well combined and smooth.
Freeze the cake once it is completely cold.
Enjoy !