For the cake:
Preheat your oven to 350 degrees. Spray a 10-inch heart-shaped dish with non-stick cooking spray. You could also line the baking dish with parchment paper for extra insurance.
In a large bowl combine the flour, granulated sugar, kosher salt, baking soda, baking powder and cocoa powder.
In another large mixing, whisk together sour cream, buttermilk, eggs, vanilla extract, and vegetable oil. Once the ingredients are combined pour in the hot coffee and continue to mix.
Next, take the wet ingredients and them to the dry ingredients. Whisk the ingredients using a hand mixture for about a minute.Pour the cake batter into the prepared baking dish. Bake the cake for about 40 to 50 minutes or until a toothpick inserted comes out clean. Remove the cake from the oven and cool completely before frosting and topping with sprinkles.
For the frosting:
In a stand mixer fitting with a paddle attachment whip the cream cheese and butter until light and fluffy. Next, add in the powdered sugar, cocoa powder, and kosher salt. Mix to combine and then add the vanilla extract. Stir and set aside until ready to frost.