If you’re in the mood for something cozy but not fussy, this Cinnamon Swirl Banana Bread hits the spot. Think tender banana bread with a ribbon of cinnamon sugar running through the middle. Nothing over the top. Just a simple loaf that slices cleanly, smells like a calm Saturday morning, and tastes even better the next day.

Ingredients for this Cinnamon Swirl Banana Bread

3 ripe bananas, mashed (about 1 1/2 cups)
1/2 cup unsalted butter, melted and slightly cooled (or neutral oil)
1/2 cup packed brown sugar
1/4 cup granulated sugar
2 large eggs, at room temperature
1 teaspoon vanilla extract
1/3 cup plain Greek yogurt or sour cream
1 3/4 cups all-purpose flour
1 teaspoon baking soda
1/2 teaspoon fine salt
1 teaspoon ground cinnamon

For the cinnamon swirl

1/3 cup packed brown sugar
1 1/2 teaspoons ground cinnamon
1 tablespoon all-purpose flour

Optional add-ins – 1/2 cup chopped walnuts or pecans, or 1/2 cup chocolate chips

Instructions

Preheat the oven to 350°F (175°C). Grease a 9×5 inch loaf pan and line it with a parchment sling for easy lifting.
In a small bowl, mix the swirl ingredients: brown sugar, cinnamon, and flour. Set aside.
In a large bowl, whisk the melted butter with the brown sugar and granulated sugar until it looks glossy. Add the eggs and vanilla, whisk again. Stir in the mashed bananas and the yogurt until just combined. Breathe. It doesn’t need to be perfect.
In a separate bowl, whisk the flour, baking soda, salt, and cinnamon. Add these dry ingredients to the wet mixture and fold gently with a spatula until you no longer see dry pockets. If using nuts or chocolate chips, fold them in now. The batter will be thick and cozy-looking.
Layer the batter: add about half to the pan, smooth it out. Sprinkle on half of the cinnamon swirl. Use a butter knife to lightly ripple it through – a few figure eights do the trick.
Add the rest of the batter, then the remaining swirl. Ripple again, gently. You’re aiming for a ribbon, not a whirlpool.
Bake for 55 to 65 minutes, until a toothpick inserted near the center comes out mostly clean with a few moist crumbs, or the center reads about 200°F (93°C). If the top is browning fast, tent loosely with foil for the last 10 to 15 minutes.
Cool in the pan for 15 minutes. Lift out and cool completely on a rack before slicing. The swirl shows off best once it’s fully set – a tiny bit of patience goes a long way.

Cook and Prep Times

Prep time: 15 minutes
Bake time: 55 to 65 minutes
Cooling time: 1 hour
Total time: about 2 hours 15 minutes
Makes: 1 loaf (about 10 slices)

Nutritional information

Approximate per slice, 1/10 of loaf:

Calories: ~310
Carbohydrates: ~48 g
Added sugars: ~27 g
Protein: ~4 g
Fat: ~11 g
Fiber: ~2 g
Sodium: ~230 mg

These numbers are estimates. Brands and measuring styles can nudge things up or down.

Frequently asked questions

Can I reduce the sugar or use alternatives?

You can reduce the total sugar in the batter by about 25 percent without hurting texture. The swirl needs some sugar to stand out, so keep that part as written for the best ribbon effect. Coconut sugar works fine in both batter and swirl. Liquid sweeteners change the moisture balance – not recommended here.

How do I ripen bananas quickly if mine are still yellow?

Place unpeeled bananas on a baking sheet and bake at 300°F (150°C) for 15 to 25 minutes until the skins are very dark and the fruit feels soft. Cool, peel, and mash. Different trick: seal bananas in a paper bag overnight with an apple. Not instant, but it helps.

What’s the best way to store and freeze this bread?

Once fully cool, wrap the loaf or slices tightly. Room temperature: up to 3 days. Fridge: up to 1 week. Freezer: up to 3 months. I like freezing slices individually so I can toast one on a sleepy morning – the cinnamon scent wakes the kitchen right up.