Cinnamon Donut Loaf

The smell of cinnamon has a way of pulling me straight into a bakery mindset, even standing in my own chaotic kitchen at seven in the morning. This loaf came together one rainy Saturday when I was craving donuts but refused to deep fry anything. The result was so warmly spiced and golden that it earned a permanent spot in my handwritten recipe binder.

I brought this loaf to a neighbors potluck brunch last spring and watched three people go back for seconds before the coffee was even ready. My friend Elena texted me that night asking for the recipe, which is honestly the highest compliment a home cook can get.

Ingredients

• All purpose flour (1 1/2 cups, 190g): The backbone of the loaf and spooning it into the cup then leveling off gives you the most reliable results.
• Granulated sugar (3/4 cup, 150g): Just enough sweetness to let the cinnamon shine without making it cloying.
• Baking powder (2 tsp): Make sure yours is fresh because this loaf relies entirely on it for a tender rise.
• Salt (1/2 tsp): A small amount that makes every spice taste more vibrant and intentional.
• Ground cinnamon (1 tsp in batter): The warm灵魂 of this entire recipe, so use a jar you actually believe in.
• Milk (1/2 cup, 120ml): Whole milk gives the richest crumb but any milk you have on hand works fine.
• Large eggs (2): They bind and enrich the batter and should be at room temperature for the smoothest mix.
• Unsalted butter, melted (1/3 cup, 75g): Melted butter keeps things effortless and adds a subtle richness that oil simply cannot match.
• Vanilla extract (1 tsp): A quiet background note that rounds out every other flavor beautifully.
• Brown sugar (1/3 cup, 70g) and cinnamon (1 tsp) for the swirl: This middle layer is what makes every slice feel like a surprise.
• Topping butter (2 tbsp, melted), granulated sugar (1/4 cup, 50g), and cinnamon (1 tsp): Brushed on while the loaf is warm so it adheres and forms that classic donut style crust.

Instructions

Get your oven and pan ready:

Preheat to 350 degrees F (175 degrees C), grease an 8x4 inch loaf pan, and line it with parchment paper so the loaf lifts out cleanly later.

Whisk the dry team together:

In a large bowl, combine the flour, granulated sugar, baking powder, salt, and cinnamon until evenly distributed and no clumps remain.

Blend the wet ingredients:

In a separate bowl, beat the milk, eggs, melted butter, and vanilla until smooth and cohesive.

Bring it all together gently:

Pour the wet mixture into the dry and fold with a spatula just until you see no more dry flour, because overmixing is the enemy of a tender crumb.

Prepare the cinnamon sugar swirl:

Stir the brown sugar and cinnamon together in a small bowl until the mixture looks like fragrant sand.

Build the loaf in layers:

Pour half the batter into the pan, sprinkle the cinnamon sugar evenly across the surface, then cover with the remaining batter and smooth the top.

Bake until golden and set:

Bake for 40 to 50 minutes and test with a toothpick in the center that should come out clean when the loaf is done.

Cool and crown with that donut crust:

Let the loaf rest in the pan for 10 minutes, transfer to a wire rack, brush with melted butter while still warm, and sprinkle generously with the cinnamon sugar topping.

Pin it

There is something quietly magical about slicing into this loaf and watching the cinnamon swirl reveal itself in every piece, slightly different each time.

When to Make It

This loaf thrives on lazy weekend mornings when you have time to let the oven warm the kitchen. It also travels beautifully wrapped in parchment, making it an easy contribution to brunches, bake sales, or a care package for someone who needs a little sweetness delivered to their door.

Storage and Leftovers

Wrapped tightly in foil or kept in an airtight container, this loaf stays moist and delicious for up to three days at room temperature. You can also freeze individual slices separated by parchment paper for up to a month, which means a quick breakfast is always within reach.

Fun Ways to Switch It Up

Once you are comfortable with the base recipe the variations are practically endless.

• Swap the cinnamon for pumpkin spice in autumn and suddenly you have a entirely seasonal treat.
• Serve a warm slice alongside a scoop of vanilla ice cream for an effortless dessert.
• Add a handful of chopped pecans or walnuts to the cinnamon sugar layer for welcome crunch.

Pin it

Every time I bake this loaf the kitchen smells like a small town bakery, and that alone is worth turning on the oven. Share it with someone you love or keep a quiet slice all to yourself.

Recipe FAQs

→ Can I use a different size loaf pan?

An 8x4-inch pan works best for this loaf. If using a 9x5-inch pan, reduce baking time by about 5–8 minutes and check for doneness early. A smaller pan may cause overflow, so monitor closely.

→ Why did my cinnamon sugar layer sink to the bottom?

This can happen if the batter is too thin. Make sure you don't overmix, and ensure your baking powder is fresh. Pouring the batter in two stages and gently spreading each layer helps keep the filling centered.

→ Can I make this loaf ahead of time?

Yes, this loaf stores well. Wrap it tightly in plastic wrap or store in an airtight container at room temperature for up to 3 days. The cinnamon flavor actually deepens after the first day.

→ What can I substitute for the milk?

Any dairy-free milk like oat milk, almond milk, or soy milk will work as a direct substitute. For extra richness, buttermilk or sour cream thinned with a splash of water also works beautifully.

→ How do I know when the loaf is fully baked?

Insert a toothpick into the center of the loaf. It should come out clean or with just a few moist crumbs. The top should be golden brown and spring back lightly when touched. Baking typically takes 40–50 minutes at 350°F.

→ Can I freeze this cinnamon loaf?

Absolutely. Slice the cooled loaf, wrap individual slices in plastic wrap, then place in a freezer bag. Freeze for up to 2 months. Thaw at room temperature or warm briefly in the oven before serving.