1. Preheat the oven to 350 degrees Fahrenheit. Spray a 12 cup Bundt Cake pan with non-stick baking spray.2. In the bowl of a stand mixer, mix together butter, peanut butter, brown sugar,sugar, eggs, and vanilla together until fully combined.3. Mix the milk and sour cream together then pour into the butter mixture. 4. Lastly add in the flour, baking soda, salt and baking soda. Mix until fully combined but being careful to not overmix. 5. Bake the bundt cake for 45-50 minutes or until a toothpick comes out clean. Allow the bundt cake to cool for 10 minutes then flip over onto a cooling rack. Sprinkle the teaspoon of sugar over the cake. 6. While the bundt cake is cooling, make the ganache. Warm heavy cream in a microwavable safe bowl in 20 second increments until hot. Pour the cream over the chopped chocolate and allow to sit for 5 minutes then stir to combine. 7. Pour the ganache over the bundt cake then let the chocolate set before seving, about 10 minutes. 8. Enjoy!