Preheat and prep the pan
Preheat your oven to 350°F (175°C).
Generously grease your bundt pan with baking spray with flour or butter it thoroughly, then dust with flour (tap out the excess).
Tip: Get into every ridge—those pretty details can be sticky if you miss a spot.
Whisk the dry ingredients
In a medium bowl, whisk together the flour, baking powder, baking soda, and salt.
This quick whisk helps the cake rise evenly and keeps you from biting into a salty pocket later.
Cream the butter and sugars
In a large bowl (or stand mixer), beat the softened butter with granulated sugar and brown sugar until light and fluffy, about 2–3 minutes.
This step builds air into the batter, which helps create that tender crumb.
Add eggs and vanilla
Beat in the eggs one at a time, mixing until each is fully incorporated. Scrape down the bowl as needed.
Mix in the vanilla.
If the batter looks a little curdled, don’t panic—once the flour goes in, it smooths out.
Add sour cream, then alternate dry + buttermilk
Mix in the sour cream (or Greek yogurt) until smooth—this is a big reason the cake stays moist.
Now add the dry ingredients in three additions, alternating with the buttermilk in two additions:
Dry → Buttermilk → Dry → Buttermilk → Dry
Mix on low speed and stop as soon as the flour disappears.
Key tip: Don’t overmix—that’s the fastest path to a tight, heavy bundt cake.
Prep and fold in the chocolate chips
Toss the semisweet chocolate chips with 1 tablespoon flour (optional, but helpful for reducing sinking).
Fold the chips into the batter with a spatula until evenly distributed.
You want “chocolate in every bite,” not a layer at the bottom.
Fill the pan and bake
Spoon the batter into the prepared pan and smooth the top. Give the pan a gentle tap on the counter to settle the batter into the grooves.
Bake for 50–60 minutes, or until:
the top springs back lightly when touched, and
a skewer/toothpick comes out with a few moist crumbs (melted chocolate is fine)
Cool, then unmold with confidence
Cool the cake in the pan for 10–15 minutes—this helps it set and release.
Run a thin knife around the edges if needed, then invert onto a wire rack. Lift the pan off slowly.
Let the cake cool completely before glazing or slicing for the cleanest cuts.