Step 1

Preheat the oven to 350°F and set an oven rack in the middle position. Generously grease a 10-cup Bundt pan with butter or nonstick cooking spray. (A 12-cup Bundt pan will work as well with no adjustments; it'll just make a shorter cake.)

Step 2

In a medium bowl, whisk together the flour, baking powder, baking soda, and salt.

Step 3

In the bowl of an electric mixer, cream the butter and sugar for 2 to 3 minutes, until light and fluffy (use medium speed for a stand mixer or high speed for a hand-held mixer). Beat in the eggs one at a time, followed by the vanilla. Add 1/3 of the dry ingredients and mix on low speed until just combined. Mix in half of the sour cream, followed by another 1/3 of the dry ingredients, until just combined. Mix in the remaining sour cream, followed by the remaining dry ingredients, scraping down the bowl as necessary and mixing until just combined. Gently mix in the chocolate chips.

Step 4

Scrape the batter into the prepared pan – it will come about halfway up the sides of the pan (or a little less than halfway in a 12-cup pan). Bake for 35 to 40 minutes, or until the top is golden brown. Let the cake cool in the pan on a rack for 10 minutes, then invert onto the rack and allow to cool completely. Carefully transfer the cooled cake to a plate; dust with cinnamon first, then Confectioners’ sugar, if desired. To slice the cake, use a serrated knife and sawing motion for best results. The cake keeps well for several days stored in a cake dome or covered tightly with aluminum foil. The cake may also be frozen for up to two months.

Step 5

Note: If using a pan other than a Bundt, baking time may need to be increased.

Step 6

Freezer-Friendly Instructions: The cake can be frozen for up to 3 months. After it is completely cooled, double-wrap it securely with aluminum foil or plastic freezer wrap, or place it in heavy-duty freezer bag. Thaw overnight on the countertop before serving.