Preheat oven to 350.

Pour cake mix and pudding mixes into a bowl. Using a stand or a hand mixer, begin mixing the dry ingredients together and slowly blend in the club soda.

Pour in the vegetable oil and continue to mix.

Beat in eggs, one at a time, mixing between additions.

Once the batter is fully mixed, fold in 1 c chocolate chips.

Pour batter into well-greased bundt cake pan and bake in preheated oven for 45 minutes (go ahead and check at 42-43 minutes with a toothpick; if it comes out clean, remove from oven).

While cake is baking, prepare chocolate ganache by pouring whipping cream and remaining 1 c chocolate chips in small saucepan over medium heat. Stir occasionally until chocolate chips are completely melted and you've made a thick chocolate sauce - about 4-5 minutes.

Remove from heat and set aside.

Once cake comes out of the oven, allow to cool for about 10-15 minutes in the cake pan before transferring to a cooling rack.

Once the cake is cool (it doesn't need to be completely cool - it can still be warm), transfer to a cake plate or a platter and drizzle chocolate ganache on top.

To make the white chocolate drizzle, pour white chips into a microwave-safe bowl. Heat for 30 seconds, stir (this is super important!), and then heat for another 30 seconds. If the chips aren't completely melted after the 2nd round in the microwave, stir again, and then place in the microwave for one more 15-30 second round.

Drizzle melted white chocolate onto cake using a fork or by spooning the melted chocolate into a plastic baggie with a hole cut out of the tip.

Add a bunch of Christmas sprinkles!

Serve pieces by themselves or with a scoop of vanilla ice cream and enjoy during the Christmas season!