Cinnamon Donut Loaf

The smell of cinnamon drifting through a kitchen on a lazy Saturday morning is the kind of thing that makes you stop whatever you are doing and just breathe. My neighbor knocked on my door once while this loaf was cooling on the rack, confessing she had been trying to figure out what I was baking for the past half hour. That crusty cinnamon sugar shell crackling under her fingers when I handed her a slice sealed our friendship for good. This loaf captures everything I love about bakery style cinnamon donuts without the deep frying.

I baked this for a school bake sale thinking it would disappear among the brownies and cupcakes, and it was the first thing gone. Three parents messaged me that evening asking for the recipe, and my daughter now requests it every year on her birthday instead of cake.

Ingredients

• All purpose flour (2 cups, 250 g): The backbone of the crumb, and spooning it into the cup rather than scooping directly from the bag keeps the loaf from turning dense.
• Granulated sugar (3/4 cup, 150 g): Just enough sweetness to let the cinnamon shine without overpowering the buttery flavor.
• Baking powder (2 tsp): Gives the loaf its gentle lift so every slice feels airy rather than brick like.
• Baking soda (1/2 tsp): Works alongside the baking powder to keep the texture soft and springy.
• Salt (1/2 tsp): A small amount that wakes up every other flavor in the pan.
• Ground cinnamon (1 tsp for the batter, 1 tsp for the topping): The soul of this recipe, and freshly opened cinnamon makes a noticeable difference.
• Large eggs (2): Bind everything together and contribute richness to the crumb.
• Whole milk (3/4 cup, 180 ml): The fat content here matters because skim milk leaves the loaf tasting a bit thin.
• Unsalted butter, melted and cooled (1/2 cup, 113 g for the batter, plus 1/4 cup, 56 g for the topping): Melting it first and letting it cool slightly prevents scrambling the eggs.
• Pure vanilla extract (2 tsp): Rounds out the warmth of the cinnamon and makes the whole kitchen smell incredible.
• Granulated sugar for topping (1/3 cup, 65 g): Combines with butter and cinnamon to create that unmistakable donut crust.

Instructions

Set the stage:

Preheat your oven to 350 degrees F (175 degrees C) and grease a 9 by 5 inch loaf pan before lining it with parchment paper, leaving the edges hanging over like little handles for easy removal later.

Build the dry foundation:

In a large bowl, whisk together the flour, sugar, baking powder, baking soda, salt, and cinnamon until evenly distributed and you see no streaks of cinnamon hiding in pockets.

Whisk the wet team:

In a separate bowl, whisk the eggs, milk, cooled melted butter, and vanilla extract until smooth and slightly frothy on the surface.

Bring it together gently:

Pour the wet ingredients into the dry and fold with a spatula just until you no longer see dry flour, because overmixing is the fastest path to a tough loaf.

Fill the pan:

Transfer the batter into your prepared loaf pan and use the back of a spoon to smooth the top into an even layer.

Bake until golden:

Bake for 40 to 45 minutes, checking at the 40 minute mark by inserting a toothpick into the center that should come out clean with just a few moist crumbs clinging to it.

Cool with patience:

Let the loaf rest in the pan for 10 minutes, then use the parchment overhang to lift it out onto a wire rack to continue cooling.

Paint on the magic:

While the loaf is still warm, brush melted butter generously over the top and sides, making sure to reach every corner and crevice.

Apply the donut crust:

Mix the sugar and cinnamon in a small bowl, then spoon it over the buttered surfaces and gently pat it with your palms so it sticks in an even, generous layer.

Let it set:

Allow the loaf to cool completely before slicing so the cinnamon sugar shell has time to firm up and the crumb structure holds together beautifully.

Pin It

The first time I served this warm with a smear of salted butter on top, my husband sat quietly at the counter eating three slices without saying a word. That silence told me everything I needed to know about whether the recipe was a keeper.

Easy Swaps and Twists

Fold half a cup of mini chocolate chips into the batter for a mocha donut vibe, or swap half the vanilla extract for almond extract if you want something that tastes a little more old fashioned bakery. A handful of toasted pecans scattered over the cinnamon sugar topping before it sets adds a satisfying crunch.

Serving It Right

This loaf shines brightest alongside a mug of strong coffee or a spiced chai latte, especially on cool mornings when the steam rises off the cup and mingles with the cinnamon aroma still clinging to the kitchen. A thick slice toasted lightly under the broiler with extra butter is frankly irresistible.

Storage and Make Ahead

Wrap leftovers tightly in foil or store in an airtight container at room temperature for up to three days, though in my house it rarely lasts past day two. You can also freeze individual slices wrapped in plastic and foil for up to a month.

• Reheat frozen slices in a 300 degree F oven for about 10 minutes to bring back that fresh baked softness.
• A quick spritz of water on the crust before reheating helps the cinnamon sugar topping stay slightly tacky rather than dry.
• Always let the loaf cool completely before wrapping or condensation will make the topping soggy.

Pin It

Some recipes come and go from my rotation, but this cinnamon donut loaf earned a permanent spot the moment that sugary crust crackled under the knife. It is the kind of bake that turns an ordinary morning into something worth savoring.

Recipe Questions

→ Can I use a different size loaf pan?

A 9x5-inch pan works best for even baking. If using an 8x4-inch pan, increase baking time by 5–10 minutes and check doneness with a toothpick.

→ How should I store the cinnamon donut loaf?

Wrap cooled slices in plastic wrap or store in an airtight container at room temperature for up to 3 days. Refrigerate for up to 5 days and gently reheat before serving.

→ Can I freeze this loaf?

Yes, wrap the whole loaf or individual slices tightly in plastic wrap, then foil. Freeze for up to 3 months. Thaw at room temperature and refresh in a warm oven for a few minutes.

→ Why is my loaf dense instead of fluffy?

Overmixing the batter is the most common cause. Stir wet and dry ingredients together just until combined—some small lumps are perfectly fine and will bake out.

→ Can I make this dairy-free?

Substitute the whole milk with oat or almond milk and use a plant-based butter alternative in equal amounts. The texture will be slightly different but still delicious.

→ When should I apply the cinnamon-sugar topping?

Brush the warm loaf with melted butter and press on the cinnamon-sugar mix right after removing it from the pan. The warmth helps the topping adhere and creates that classic donut crust.