Buttery Cinnamon Bundt Cake with Brown Sugar Swirl
This cinnamon Bundt cake has a tender, buttery crumb and a thick ribbon of brown sugar cinnamon running through the middle. It’s the kind of cake that fills the kitchen with a warm, sweet smell and looks like you spent hours on it, but comes together with a handful of pantry staples.
A slice needs nothing more than a cup of coffee, though a scoop of vanilla ice cream never hurts.
Why This Cake Stays in the Rotation
The crumb is soft and fine, not heavy, and the swirl keeps every bite interesting. I use buttermilk for its gentle tang and reliable moisture, so the cake stays fresh for days on the counter.
Because the batter is simple and the assembly takes only a few minutes, it’s the cake I turn to when I want something homey without a lot of fuss.
Ingredients
- 2 ½ cups (312 g) all-purpose flour: spooned and leveled, not scooped
- 2 tsp baking powder: helps the cake rise evenly
- ½ tsp baking soda: reacts with the buttermilk for a light crumb
- ½ tsp fine sea salt: balances the sweetness
- 1 cup (226 g) unsalted butter, softened: leave it at room temperature for about an hour
- 1 ¾ cups (350 g) granulated sugar: fine sugar dissolves easiest in the creaming step
- 4 large eggs, at room temperature: cold eggs can make the batter curdle
- 2 tsp vanilla extract: use pure vanilla if you have it
- 1 cup (240 ml) buttermilk, at room temperature: if you’re out, stir 1 tbsp lemon juice into regular milk and let it sit 10 minutes
- ⅔ cup (140 g) packed light brown sugar: for the swirl; dark brown works in a pinch but tastes more molasses-forward
- 3 tbsp ground cinnamon: for the swirl; fresh cinnamon gives the boldest flavor
Variations and Swaps
- Add nuts: stir ½ cup toasted chopped pecans or walnuts into the brown sugar cinnamon mixture so they swirl through the cake.
- Sour cream version: replace the buttermilk with an equal amount of room-temperature sour cream for a slightly denser, tangier crumb.
- Simple glaze: whisk 1 cup powdered sugar with 1 to 2 tbsp milk and a splash of vanilla, then drizzle over the cooled cake.
- Spice it up: add ¼ tsp ground nutmeg or a pinch of cloves to the cinnamon sugar for extra warmth.
If you like single-layer cakes with old-fashioned flavor, my Vanilla Sour Cream Coffee Cake uses the same no-fuss method.
How to Make Cinnamon Bundt Cake
Step 1: Mix the Cinnamon Sugar Swirl
Stir the ⅔ cup brown sugar and 3 tbsp cinnamon together in a small bowl until no lumps remain. Set it beside the stove so it’s ready when you need it.
The mixture should feel like damp sand and smell spicy and sweet. If your brown sugar is lumpy, crumble it between your fingers before measuring.
Doing this first means you won’t slow down while the butter and sugar are creaming, which helps keep the batter’s texture even.
Step 2: Cream the Butter and Sugar
Place the 1 cup softened butter and 1 ¾ cups granulated sugar in a large bowl. Beat with an electric mixer on medium speed for about 3 minutes, until the mixture looks pale and fluffy. Scrape down the sides once or twice so everything incorporates.
You’re looking for a color shift from bright yellow to a softer ivory. The sugar grains should dissolve into the butter, leaving a light, airy base that gives the cake its tender crumb.
If the butter is too cold it won’t cream properly, and if it’s melted the cake can turn out dense. Pull it from the fridge about an hour before you start.
Step 3: Add the Eggs and Buttermilk
Beat in the 4 eggs one at a time, letting each fully disappear before adding the next. Then pour in the 2 tsp vanilla extract and mix briefly.
In a separate bowl, whisk together the 2 ½ cups flour, 2 tsp baking powder, ½ tsp baking soda, and ½ tsp salt. With the mixer on low, add the flour mixture in three additions, alternating with the 1 cup buttermilk in two additions, starting and ending with flour. Stop mixing as soon as the last streak of flour vanishes.
The batter will be thick and smooth, with a slight ribboning when you lift the beater. Overworking it now can make the cake tough, so keep the speed low and your eye on the bowl.
Step 4: Fill and Swirl the Pan
Grease a 10- to 12-cup Bundt pan generously with softened butter, dust with flour, and tap out the excess. Spread half the batter evenly into the bottom of the pan. Sprinkle the brown sugar cinnamon mixture over it in an even layer, then top with the remaining batter and smooth the surface with a spatula.
Insert a butter knife straight down into the pan and draw a continuous figure-eight motion through the batter, touching the bottom and circling around once. This distributes the swirl without deflating the cake.
The batter will look marbled with dark streaks. Go gentle and don’t over-swirl or the layers will blur into a single muddy color, and the ribbon won’t hold.
Step 5: Bake the Cake
Preheat the oven to 350°F (175°C) and position a rack in the lower third. Slide the filled pan onto the rack and bake for 50 to 60 minutes. The top will spring back lightly when pressed and a long skewer inserted into the thickest part should come out with a few moist crumbs, not wet batter.
Ovens vary, so check at 50 minutes. The cake will pull away slightly from the sides and the whole kitchen will smell deeply of cinnamon and browned butter.
Let the cake cool in the pan on a wire rack for exactly 10 minutes. Any longer and the sugar in the swirl may harden and grip the pan, making release trickier.
Step 6: Turn Out and Slice
Run a thin, flexible spatula around the inner and outer edges of the pan to loosen the cake. Place a serving plate upside down over the pan, hold them together firmly, and flip in one confident motion. Lift the pan away slowly.
The swirl will be visible as a dark, glossy ring winding through the golden crumb. If any bits stick to the pan, you can nudge them back into place while the cake is still warm.
Slice with a serrated knife and serve right away or let it cool completely. The crumb slices cleanly once cooled, but a warm slice with butter is its own reward.
Tips for a Swirl That Holds Its Shape
- Use room-temperature eggs and buttermilk. Cold ingredients can seize the creamed butter, leading to a heavy batter that pushes the swirl downward during baking.
- Grease and flour every crevice of the Bundt pan thoroughly. The swirl has a lot of sugar, and even a small sticky spot can tear the cake when you turn it out.
- Don’t over-swirl. A single figure-eight pass creates clear ribbons; more than that blends the cinnamon sugar into the batter and you lose the dramatic bands.
- If the top browns too fast before the center is done, tent the pan loosely with foil during the last 15 minutes.
Storing and Keeping the Cake Fresh
- Refrigerate: Wrap the cooled cake tightly in plastic or keep it under a cake dome at room temperature for up to 4 days. The crumb stays soft.
- Reheating: Warm individual slices in the microwave for 15 to 20 seconds. A quick heat revives the buttery taste and makes the swirl slightly sticky again.
- Freeze: Wrap the whole cake or slices in a double layer of plastic and freeze for up to 2 months. Thaw at room temperature still wrapped so condensation stays on the outside.
What to Serve With Cinnamon Bundt Cake
A cup of strong black coffee cuts through the sweetness and plays off the spice. For dessert, a scoop of good vanilla ice cream melts into the warm crumb and the cold cream contrasts with the soft cake. If you’re serving it at brunch, a dollop of lightly sweetened whipped cream and fresh orange segments brighten each bite.
Frequently Asked Questions
Why did my swirl sink to the bottom?
The batter was probably too thin or overmixed, which can’t support the weight of the brown sugar cinnamon layer. Make sure your butter and sugar are properly creamed, and stop mixing as soon as the flour disappears.
Can I use a loaf pan instead?
Yes, divide the batter between two greased 9×5-inch loaf pans and bake at the same temperature for about 40 to 45 minutes, until a tester comes out clean. The swirl will still stripe through.
How do I get the cake to release cleanly?
Brush every inch of the pan with softened butter, dust with flour, and shake out the excess. Let the cake cool exactly 10 minutes after baking. Too little time and it’s too fragile; too long and the sugar sets hard.
Can I double the swirl?
You can increase the brown sugar to 1 cup and the cinnamon to 4 tbsp for a more pronounced ribbon. Keep the batter amounts the same so the structure holds.
Cinnamon Bundt Cake Recipe
Ingredients
Method
- Stir the brown sugar and cinnamon together in a small bowl until combined; set aside.
- Beat the butter and granulated sugar on medium speed until pale and fluffy, about 3 minutes.
- Add the eggs one at a time, then mix in the vanilla. Whisk the flour, baking powder, baking soda, and salt in a separate bowl. With the mixer on low, add the flour mixture and buttermilk alternately in three and two additions, starting and ending with flour, mixing just until combined.
- Grease and flour a 10- to 12-cup Bundt pan. Spread half the batter in the pan, sprinkle the cinnamon sugar evenly over it, top with remaining batter, and smooth the surface. Swirl once with a butter knife in a figure-eight motion.
- Preheat the oven to 350°F (175°C) and bake the cake on the lower rack for 50 to 60 minutes, until a skewer comes out with a few moist crumbs. Cool in the pan on a wire rack for 10 minutes.
- Run a spatula around the edges, invert onto a serving plate, and slice warm or at room temperature.
