Introduction to Cinnamon Swirl
Cinnamon swirl is a simple loaf cake with a soft, buttery crumb and a ribbon of brown sugar and cinnamon running through the center. Sour cream keeps the batter tender, while milk gives it the right consistency for spreading in the pan.
The cinnamon mixture is layered into the batter rather than stirred throughout. That creates a clear swirl in each slice and keeps the warm spice balanced with the lightly sweet cake. Serve it for breakfast, an afternoon snack, or dessert. It belongs to our Fall Bread Recipes collection.
Why You'll Love This Cinnamon Swirl
- The batter comes together with a bowl and a whisk, so cleanup is easy.
- Sour cream gives the loaf a moist, tender texture without making it heavy.
- The cinnamon ribbon uses pantry staples and takes only a minute to mix.
- The loaf slices neatly once it has cooled completely.
- It can be served plain, with coffee, or warmed gently for a simple fall treat.
Ingredients for Cinnamon Swirl
- 2 cups all-purpose flour
- 1 tsp baking soda
- 1/2 tsp baking powder
- 1/2 tsp salt
- 1/2 cup (113g) butter, softened
- 3/4 cup (150g) granulated sugar
- 2 large eggs
- 1 tsp vanilla extract
- 3/4 cup (180g) sour cream
- 1/4 cup (60ml) milk
- 1/3 cup (65g) brown sugar
- 1 1/2 tsp ground cinnamon
Use softened butter for the batter, not melted butter. Leave the butter at room temperature for about 30 to 45 minutes, until it gives slightly when pressed but still holds its shape. Full-fat or reduced-fat sour cream will both work, though full-fat sour cream gives the richest crumb. The exact ingredients are: 2 cups all-purpose flour; 1 tsp baking soda; 1/2 tsp baking powder; 1/2 tsp salt; 1/2 cup (113g) butter, softened; 3/4 cup (150g) granulated sugar; 2 large eggs; 1 tsp vanilla extract; 3/4 cup (180g) sour cream; 1/4 cup (60ml) milk; 1/3 cup (65g) brown sugar; 1 1/2 tsp ground cinnamon.
How to Make Cinnamon Swirl
Step 1: Prepare the Pan
Heat the oven to 350°F. Grease a 9-by-5-inch loaf pan and line it with parchment paper, leaving enough paper hanging over the long sides to lift out the finished loaf. The parchment is helpful because the cinnamon sugar may stick slightly to the bottom of the pan.
Step 2: Mix the Dry Ingredients
Add the flour, baking soda, baking powder, and salt to a medium bowl. Whisk for about 30 seconds to distribute the leaveners evenly. Set the bowl aside while you prepare the butter mixture.
Step 3: Cream the Butter and Sugar
In a large bowl, beat the softened butter and granulated sugar with a hand mixer on medium speed for 2 to 3 minutes, or until the mixture looks pale and creamy. Add the eggs one at a time, beating well after each addition. Mix in the vanilla extract. Scrape down the sides of the bowl as needed.
Step 4: Finish the Batter
Add the dry ingredients in three additions, alternating with the sour cream and milk. Begin and end with the dry ingredients, mixing on low speed just until no dry streaks remain. Do not overmix. The batter will be thick, so use a spatula to scrape the bowl and bring it together.
Step 5: Add the Cinnamon Swirl
In a small bowl, stir together the brown sugar and ground cinnamon. Spread half of the batter in the prepared pan and smooth the surface. Sprinkle the cinnamon mixture evenly over the batter, keeping it slightly away from the edges. Spoon the remaining batter over the top and smooth it carefully. Run a butter knife through the batter in two or three loose zigzags to create a swirl. Avoid mixing the layers too much.
Step 6: Bake and Cool
Bake for 45 to 55 minutes, until a toothpick inserted into the center comes out with a few moist crumbs but no wet batter. If the top browns before the center is done, tent the loaf loosely with foil during the final 10 to 15 minutes. Cool in the pan for 15 minutes, then lift it out by the parchment and cool completely on a wire rack before slicing. For food safety and the best texture, do not leave the baked loaf at room temperature for more than 2 hours if your kitchen is warmer than 90°F.
Tips for Success
- Measure the flour by spooning it into a dry measuring cup and leveling the top, or use a kitchen scale for the most consistent result.
- Mix the batter only until the flour disappears. Extra mixing can make the loaf firm instead of tender.
- Spread the top layer of batter gently so the cinnamon layer stays in the middle.
- A serrated knife makes clean slices without pressing down on the swirl.
- Let the loaf cool fully before wrapping it. Store it airtight at room temperature for up to 2 days or refrigerate it for up to 5 days.
- Freeze tightly wrapped slices for up to 2 months, then thaw them in the refrigerator or at room temperature.
Equipment Needed
- 9-by-5-inch loaf pan
- Mixing bowls
- Hand mixer
- Whisk
- Rubber spatula
- Wire cooling rack
Variations
- Add 1/2 cup of chopped toasted pecans to the cinnamon mixture for a nutty crunch.
- Replace up to 1/2 cup of the all-purpose flour with whole wheat flour for a slightly heartier loaf.
- Add 1/4 teaspoon of ground nutmeg to the cinnamon mixture for a deeper fall spice profile.
- Bake the batter in 12 lined muffin cups for about 18 to 23 minutes, checking with a toothpick.
- For a sharper cinnamon flavor, use a full 2 teaspoons of ground cinnamon in the swirl while keeping the other amounts the same.
Serving Suggestions
Slice the cooled loaf into eight even pieces and serve it plain with coffee, tea, or a glass of milk. For a warm serving, place one slice in the microwave for about 10 seconds. The loaf is also good with a little softened butter, but it has enough moisture and sweetness to stand on its own.
FAQs about Cinnamon Swirl
Can I make cinnamon swirl in an 8-by-4-inch loaf pan? Yes. An 8-by-4-inch pan will make a taller loaf, so begin checking it at 50 minutes and expect the total baking time to be a little longer. Fill the pan no more than two-thirds full and use any extra batter for a small muffin.
Why did the cinnamon layer sink? A thick layer of cinnamon sugar can sink if it is concentrated in one place or if the batter is too soft. Sprinkle it evenly, keep it slightly away from the pan edges, and spread the top batter gently rather than pressing it down.
How do I know when the loaf is done? Insert a toothpick into the center, avoiding the cinnamon ribbon if possible. It should come out with a few moist crumbs and no streak of raw batter. The top should spring back lightly when pressed.
Can I use salted butter? Yes. If using salted butter, reduce or omit the added 1/2 tsp salt. Unsalted butter gives you more control over the seasoning, but either type can work.
How should I store cinnamon swirl? Once completely cool, wrap the loaf or place it in an airtight container. Keep it at room temperature for up to 2 days, refrigerate it for up to 5 days, or freeze it in wrapped slices for up to 2 months.
Final Thoughts
This cinnamon swirl loaf is an easy way to turn basic baking ingredients into a tender, warmly spiced treat. The key is to soften the butter, avoid overmixing, and let the loaf cool fully before cutting so the cinnamon ribbon stays defined.
Looking for more? This recipe is part of our roundup of 6 Fall Bread Recipes for Cozy Breakfasts and Easy Weekend Baking.
Cinnamon Swirl
Ingredients
Equipment
Method
- Heat the oven to 350°F, grease a 9-by-5-inch loaf pan, and line it with parchment.
- Whisk the flour, baking soda, baking powder, and salt in a medium bowl.
- Beat the softened butter and granulated sugar until creamy, then beat in the eggs one at a time and add the vanilla.
- Alternate the dry ingredients with the sour cream and milk, mixing just until combined.
- Layer half the batter, the brown sugar and cinnamon, and the remaining batter in the pan, then make a few loose swirls with a knife.
- Bake for 45 to 55 minutes, cool in the pan for 15 minutes, and cool completely on a rack before slicing.
Nutrition
Notes
- Use softened rather than melted butter for the best crumb.
- Cool the loaf completely before cutting for a cleaner swirl.
- Store airtight at room temperature for up to 2 days or refrigerate for up to 5 days.
