Cinnamon Swirl Bundt Cake

The best part of this Cinnamon Swirl Bundt Cake is what happens when you slice into it: a sandy ribbon of cinnamon-brown sugar spirals through a plush, sour-cream-soft crumb, and the whole kitchen smells like warm vanilla and spice. It looks bakery-fancy thanks to the Bundt shape, but the batter comes together in a straightforward, no-fuss rhythm.

If you’re in a cinnamon mood and want something quicker on a weeknight, I’ll point you to this microwave cinnamon roll mug cake—but when you’ve got an hour and want a sliceable cake with that dramatic swirl, this is the one I make.

Why You’ll Love This Recipe

• The sour cream keeps the crumb tender and moist, so it stays soft even after it cools.
• A cinnamon–brown sugar layer bakes into a swirly ribbon that tastes like the center of a cinnamon roll.
• The Bundt pan does the “presentation work” for you—no frosting or decorating needed for it to look special.
• The batter is thick enough to hold the swirl without the cinnamon sugar sinking straight to the bottom.
• You get a crisp, golden outer edge with a buttery, vanilla-scented interior.
• It slices cleanly once cooled, so it’s great for sharing (and sneaking an extra sliver later).

The Story Behind This Recipe

I developed this one for those days when I want cinnamon-roll flavor without the project: creaming butter and sugar, enriching with sour cream, then layering cinnamon-brown sugar right into the pan gives you that cozy swirl payoff with simple pantry ingredients and one reliable bake.

What It Tastes Like

Think vanilla cake meets cinnamon toast: buttery edges, a soft and slightly tangy crumb from the sour cream, and pockets of caramel-y brown sugar that melt into the swirl. The cinnamon comes through in the aroma first—warm and toasty—then lingers in each bite without overwhelming the cake.

Ingredients You’ll Need

This recipe is built on a classic butter-and-sugar base (for lift and flavor), sour cream (for moisture and tenderness), and a simple cinnamon–brown sugar mix that becomes the swirl. Use truly softened butter so it creams fluffy, and measure the cinnamon so the swirl tastes bold but not bitter. If you’re craving more cinnamon-forward treats after this, these cinnamon roll cookies are a fun, snackable next bake.

• 2 cups all-purpose flour
• 1 ½ teaspoons baking powder
• 1 teaspoon baking soda
• 1 cup sugar
• ½ cup unsalted butter, softened
• 1 cup sour cream
• 3 large eggs
• 1 tablespoon vanilla extract
• 1 tablespoon ground cinnamon
• ½ cup brown sugar

How to Make Cinnamon Swirl Bundt Cake

1. Heat the oven and prep the pan. Preheat to 350°F (175°C). Grease a Bundt pan really well, making sure to get into all the curves so the swirl releases cleanly later.
2. Whisk the dry ingredients. In a medium bowl, whisk together the flour, baking powder, and baking soda until evenly combined (no streaks of leavener).
3. Cream butter and sugar until fluffy. In a large mixing bowl, beat the softened butter and sugar until the mixture looks lighter in color and feels airy—this helps the cake bake up tender rather than heavy.
4. Add eggs, then sour cream and vanilla. Beat in the eggs one at a time, letting each one disappear before adding the next. Stir in the sour cream and vanilla until the batter looks smooth and creamy.
5. Mix in the dry ingredients—gently. Add the flour mixture gradually, mixing just until you no longer see dry flour. The batter should be thick and smooth; stop mixing as soon as it comes together to keep the cake soft.
6. Make the cinnamon swirl mixture. In a small bowl, mix the cinnamon and brown sugar until the color looks evenly speckled and cohesive (no cinnamon clumps).
7. Layer for the swirl. Spoon half the batter into the prepared Bundt pan and spread it gently. Sprinkle half the cinnamon-sugar over the batter. Add the remaining batter, then top with the remaining cinnamon-sugar.
8. Swirl with a knife. Run a knife through the batter in a few slow, confident passes—enough to marble the cinnamon sugar, not so much that it fully blends in.
9. Bake. Bake for 50–60 minutes, until the top looks set and a toothpick comes out clean. (A few moist crumbs are fine; wet batter is not.)
10. Cool, then invert. Let the cake cool in the pan before inverting onto a plate. Cooling helps the crumb set and makes the Bundt shape release more cleanly.

Tips for Best Results

• Really grease the Bundt pan. Those ridges love to cling—take a moment to coat every nook so the cake unmolds in one piece.
• Stop mixing as soon as the flour disappears. Overmixing can tighten the crumb; you want a thick batter that still looks plush, not elastic.
• Swirl lightly. A few passes with the knife gives a defined ribbon; too much swirling turns the whole cake uniformly cinnamon and you lose that “stripe.”
• Give it time to cool before flipping. If you invert too early, the cake can tear; if you wait until it’s set, it releases with cleaner edges.
• Use the full bake window as a guide, not a rule. Bundt pans vary; start checking closer to 50 minutes, looking for a clean toothpick and a fully set top.

Variations and Substitutions

If you want cinnamon-roll vibes in a faster format another day, try a cozy single-serve cinnamon roll in a mug and save the Bundt for when you want slices to share. For this cake specifically, you can keep the swirl chunkier by swirling less, or make the ribbon more even by swirling a touch more—both work, just different visuals.

How to Serve It

I love serving this slightly warm so the cinnamon-brown sugar ribbon tastes extra gooey. Slice it thick and pair it with coffee or black tea—the vanilla and cinnamon really pop. If you want something fresh on the side, a spoonful of healthy cinnamon apples leans into the spice and adds a soft, fruity contrast without needing any extra toppings.

How to Store It

Keep the cake covered at room temperature so it stays tender. For longer keeping, store it covered in the refrigerator and let slices come to room temp before serving so the crumb softens again. You can also freeze slices tightly wrapped; thaw at room temperature until the swirl loses its chill and the cake tastes plush again.

Final Thoughts

This Cinnamon Swirl Bundt Cake is the kind of bake that feels comforting and a little special at the same time—tender from sour cream, boldly cinnamon-swirled, and beautiful the moment you turn it out of the pan. If you make it, take your time with the layering and the swirl; that’s where the magic shows up in every slice.

Conclusion

If you want to compare approaches, it’s worth looking at this classic cinnamon swirl Bundt coffee cake for another simple swirl method. For a more cinnamon-roll-inspired spin, this cinnamon roll Bundt cake is a fun reference for flavor direction. And if you love richer, pound-cake-style texture, you might enjoy this famous cinnamon roll Bundt cake as a next bake to try.