Let’s get the oven warmed up to 350°F (175°C) and Grease three 9-inch round cake pans, or line them with parchment paper.
Combine the dry ingredients, flour, cocoa powder, baking powder, baking soda, and salt, by whisking them together. Mixing these first ensures that everything is evenly distributed.
Now in a large bowl, use your electric mixer to cream the butter and sugar together. Beat it until the mixture is light, and fluffy.
Add the eggs individually, making sure each one is thoroughly blended. Then add your vanilla extract, whole milk, sour cream, and hot brewed coffee(optional). The
Now, gradually add the dry ingredients into the wet mixture, mixing on low speed. Divide your batter evenly between the three pans.
Pop those pans in the oven and bake for 25 minutes. When a toothpick comes out clean from the center, they’re ready to cool. Let them rest for 10 minutes. (read note!)
Beat together the butter, powdered sugar, cocoa powder, heavy cream, vanilla, and a pinch of salt until it’s smooth and creamy.
Place the first cake layer on your cake stand or plate and spread a good layer of frosting on top. Add the second layer, frost it, and then top with the third layer.
Then, cover the top and sides with the remaining frosting until the whole cake is beautifully coated. Get ready to indulge in the most decadent Swiss Chocolate Chalet Cake ever.