Cinnamon Swirl Donut Loaf

Featured in Sweet Treats You'll Actually Make Twice.

This soft loaf mixes donut-like flavors with rich cinnamon swirls baked into a tender bread. Finished with melted butter and a coating of sugar and cinnamon, it’s sweet, moist, and easy to slice. The swirled design adds a pretty touch. Serve it as a dessert or breakfast that's full of sweetness and a slight crisp from the sugary outer layer.
A woman wearing a chef's hat and apron.
Updated on Thu, 20 Mar 2025 02:31:43 GMT
A plate holding a tasty cinnamon loaf. Pin it
A plate holding a tasty cinnamon loaf. | cookbybook.com

This donut-inspired cinnamon swirl bread combines all the best parts of a cinnamon sugar donut in a tasty, easy-to-slice loaf. After many batches to nail that soft, donut-matched texture and stunning swirl pattern, I've whipped up something that'll turn your kitchen into what feels like a neighborhood bakery – and tastes way better than it even looks.

My daughter tried this while it was still warm last Saturday and told me it was "way better than actual donuts!" What makes all the difference? The buttermilk – that's what gives you that perfect soft texture inside.

Key Ingredients

  • Buttermilk: Gives you that classic donut softness. Its slight tang works magic against the sweetness.
  • Molasses: A small amount mixed into the swirl adds amazing rich flavor notes.
  • Canola Oil and Butter: Working together, they keep everything moist while adding great taste.
  • Ground Cinnamon: Go for newly bought, aromatic cinnamon for maximum flavor. Vietnamese cinnamon works wonders if you can find it.
A delicious pastry with a spiral swirl on top, ready to be enjoyed. Pin it
A delicious pastry with a spiral swirl on top, ready to be enjoyed. | cookbybook.com

Step-by-Step Guide

Making Your Base:
Run dry items through a sifter for extra lightness. Beat fats with sugar until they look fluffy and pale. Drop in eggs one by one, mixing well each time. Switch between adding flour mix and buttermilk. Don't overmix or you'll lose that softness.
Creating The Swirl:
Set aside some batter. Mix in brown sugar with cinnamon. Add a touch of molasses for extra color and taste. Your mixture should look a bit darker. A few streaks are totally fine - don't mix too much.
Building Your Loaf:
Start with half your plain mix in the pan. Drop spoonfuls of cinnamon mix on top. Pull a knife through for swirls. Add remaining batters in the same way. Keep your swirling light and easy.

I first tried making this bread when I was craving cinnamon donuts during a snowstorm but didn't want to bundle up and head out.

Perfect Baking Heat

Keeping your oven at 350°F helps the bread cook all the way through without getting too dark on the outside before the middle finishes.

Beautiful Swirl Patterns

Don't go crazy with the swirling - a gentle touch works best or you'll end up mixing everything together and lose those pretty swirls.

Planning Ahead

You can mix up the cinnamon-sugar topping early, but wait to put it on the bread until you're ready to serve for the freshest experience.

Ways To Enjoy

This bread tastes amazing by itself, but try turning leftover slices into French toast the next morning (if anyone lets it stick around that long!).

Pro Cooking Advice

  • Get your ingredients to room temp for the smoothest texture.
  • The buttermilk isn't optional - it creates that true donut flavor.
  • Cool the bread for exactly 10 minutes before taking it out of the pan.

Making this cinnamon swirl donut bread always fills my home with incredible smells. It's become our favorite thing to enjoy on weekend mornings with some coffee, and it's always a hit when we have guests over.

A delicious pastry with a spiral pattern is displayed on a wooden tray. Pin it
A delicious pastry with a spiral pattern is displayed on a wooden tray. | cookbybook.com

Frequently Asked Questions

→ Why switch between wet and dry while mixing?
It helps everything blend evenly and avoids overworking the batter, keeping it soft and light.
→ Can I replace buttermilk?
Sure, just mix regular milk with 1/2 tablespoon of lemon juice and let it sit for 5 minutes.
→ How do I check if it’s fully baked?
Stick a toothpick in the center, and if it comes out mostly clean with just crumbs, it’s ready.
→ Is it possible to freeze?
Yep, wrap it well and freeze for 3 months, adding the sugar topping only after thawing.
→ Why is cooling before coating important?
Cooling for ten minutes helps keep the loaf firm during the butter-dipping and coating step.

Cinnamon Swirl Donut Loaf

Soft bread filled with sweet cinnamon layers, finished with a buttery sugared top that brings all the cozy donut vibes.

Prep Time
15 Minutes
Cook Time
45 Minutes
Total Time
60 Minutes
By: Susan

Category: Desserts

Difficulty: Intermediate

Cuisine: American

Yield: 6 Servings (1 loaf)

Dietary: Vegetarian

Ingredients

→ Base

01 1/4 cup softened unsalted butter
02 1/4 cup canola oil
03 3/4 cup white sugar
04 1 1/2 teaspoons vanilla
05 1/2 teaspoon salt
06 1 1/2 cups plain flour
07 1/2 cup buttermilk
08 2 large eggs
09 1 teaspoon baking powder

→ Swirl

10 1/2 teaspoon molasses
11 1 teaspoon cinnamon powder
12 2 tablespoons light brown sugar

→ Coating

13 1/2 teaspoon ground cinnamon
14 1/4 cup packed brown sugar
15 1/4 cup white sugar
16 1/2 cup (1 stick) melted butter

Instructions

Step 01

Set your oven to 350°F (175°C) and let it warm up. Coat a 9x5-inch pan with grease and dusting. Toss flour, salt, and baking powder together in a bowl.

Step 02

In a mixing bowl, blend sugar, butter, and oil until it becomes airy (roughly 3 minutes). Add eggs one after another, mixing in between, then stir in vanilla. Gently mix dry ingredients and buttermilk bit by bit, starting and stopping with the dry stuff.

Step 03

Scoop out 3/4 cup of your batter into another bowl. Sprinkle the brown sugar, cinnamon, and molasses over it and stir until combined.

Step 04

Pour half your regular batter into the pan. Drop spoonfuls of half the swirl batter on top and gently mix to create a pattern. Do this again with the rest of each batter.

Step 05

Place the pan in the oven for about 45 to 50 minutes. Once a toothpick mostly comes out clean, take it out and cool it inside the pan for 10 minutes.

Step 06

Melt butter in a shallow dish. In another, mix brown sugar, white sugar, and cinnamon. Dip the cooled loaf into butter, then roll it in the sugar mix. Wait until it's fully cooled before cutting into slices.

Tools You'll Need

  • 9x5-inch baking pan
  • Mixer (stand or hand)
  • Cooling rack
  • Shallow bowls for topping ingredients

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Uses dairy (butter, buttermilk)
  • Eggs are included
  • Contains wheat (flour)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: ~
  • Total Fat: ~
  • Total Carbohydrate: ~
  • Protein: ~