Chocolate Muffin with Chocolate Ganache Filling

Preheat oven to 350. Line a muffin pan and set aside.
In a large bowl add melted butter, oil, and sugar. Mix to combine.
Add in eggs, sour cream, and vanilla extract. Mix to combine.
In a small bowl combine flour, cocoa powder, baking soda, baking powder, and salt.
Add flour mixture, and milk to the wet mixture. Mix until just combined. Don't over mix. I leave a little bit of dry bits left.
Add in chocolate chips (or chunks). Fold to combine.
Fill cupcake tins and place in oven for 22-28 minutes or until a toothpick comes out clean.
Remove from oven and allow to cool for 5 minutes. Remove from the muffin tin and allow to cool an additional 10 minutes.

Heat heavy cream until steaming, do not boil.
Add chocolate chips to heat safe bowl and pour warmed heavy cream on top. Mix until chocolate has melted.
Add chocolate to a piping bag with a circle tip.
Insert the tip into the center of each muffin and add about 2 tbsp of chocolate ganache and then drizzle the remaining over the top.