Step 1

Grease a bundt pan well and preheat oven to 325F.

Step 2

In the bowl of a stand mixer fitted with a paddle attachment (or in a large mixing bowl with an electric hand mixer), combine cake mix, pudding mix, eggs, water, oil, sour cream, and vanilla extract.

Step 3

Mix on low speed for about 30 seconds to combine, then scrape down the sides of the bowl. Increase mixer speed to medium-high and beat for about 2 minutes.

Step 4

Pour batter into prepared bundt pan. Bake for about 45-50 minutes, until a toothpick inserted in the center comes out clean.

Step 5

Remove cake from oven and let sit for 10 minutes. Gently slide a knife around the edges of the pan to loosen the cake, then invert cake pan onto a plate.

Step 6

Cool completely, then dust with powdered sugar if desired and serve.