Step 1

Preheat oven to 350 degrees F. Lightly butter/flour (or spray) a 9x13-inch baking pan, set aside.

Step 2

Using a hand or stand mixer, beat the butter and sugar until light and fluffy, 2-3 minutes. Add the red food coloring and vanilla extract, beat until combined. Add the eggs one at a time, mixing just until incorporated.

Step 3

In a small mixing bowl, whisk together the flour, cocoa powder, salt, and baking soda. Alternate adding the dry ingredients and buttermilk/vinegar by hand. Mix together with a wooden spoon just until combined, do not overmix.

Step 4

Pour the batter into the prepared baking pan, spread into an even layer. Place in the oven and bake for 25-30 minutes or until a cake tester inserted into the center comes out clean. Remove and poke holes into the cake with a fork. Pour the condensed milk over top (I only used half but you can use the whole can). Allow the cake to cool before frosting.

Step 5

To make the frosting, beat the butter and cream cheese on high speed for 2-3 minutes, then reduce speed and add the powdered sugar. Add in the salt, vanilla extract and milk. Beat for an additional 2-3 minutes until the frosting is light and fluffy. Spread across the cooled cake and decorate as desired.