There is something so cozy about a soft vanilla cake with a cinnamon sugar ribbon tucked right through the middle. This sourdough coffee cake is sweet, tender, and topped with a buttery pecan crumble that bakes into golden, nutty little clusters. It’s the kind of cake that feels right for a slow weekend breakfast, a brunch table, or an afternoon treat with coffee.
The sourdough starter discard brings a gentle tang that balances the brown sugar and cinnamon beautifully. Sour cream and buttermilk keep the crumb moist, while the cinnamon filling gives every slice that bakery-style swirl. Best of all, this recipe is simple to make. No mixer required, no complicated shaping, and no waiting for dough to rise. Just mix, layer, crumble, and bake!
Why Everyone Loves This Coffee Cake
This Sourdough Coffee Cake has everything you want in a classic coffee cake: a moist vanilla crumb, a sweet cinnamon layer, and a buttery topping with plenty of texture. The sourdough discard adds depth without making the cake taste sour. It’s easy enough for a casual bake but special enough to serve when friends or family come over.
Moist Sourdough Coffee Cake
This tender coffee cake is layered with cinnamon sugar and finished with a pecan crumble topping. It’s rich, cozy, and perfect for breakfast, brunch, or dessert.
Ingredients
Crumble Topping
- 4 tablespoons (56 g) butter, melted
- ½ cup (110 g) light brown sugar
- ½ cup (60 g) all-purpose flour
- 2 teaspoons ground cinnamon
- 1 cup (120 g) chopped pecans, optional
Cinnamon Sugar Filling
- ⅓ cup (73 g) light brown sugar
- ⅓ cup (40 g) all-purpose flour
- 2 teaspoons ground cinnamon
Sourdough Coffee Cake Batter
- 8 tablespoons (113 g) butter, softened
- ½ cup (110 g) light brown sugar
- ½ cup (100 g) granulated sugar
- 2 large eggs
- 2 teaspoons (10 g) vanilla extract
- ½ cup (115 g) sour cream
- ½ cup (125 g) sourdough starter discard
- 1 cup (240 g) buttermilk
- 1 teaspoon (5 g) fine sea salt
- 2 teaspoons baking powder
- 2 cups (240 g) all-purpose flour
Instructions
- Melt the butter in a bowl and stir in the light brown sugar and cinnamon until smooth. Add the flour and pecans and stir again until the mixture comes together into a big clumpy mass. Set it aside and let it cool.
- Stir the cinnamon, flour, and light brown sugar together in a small bowl and set aside.
- Preheat your oven to 350°F (175°C). Lightly grease a 9″ x 9″ metal baking pan with butter or cooking spray.
- In a large mixing bowl, use a spatula to cream the butter, light brown sugar, and granulated sugar until smooth. Add the eggs, vanilla extract, sour cream, sourdough starter, milk, salt, and baking powder to the bowl and stir until combined. Add the flour and mix until the ingredients are fully incorporated.
- Pour half of the cake batter into the greased baking dish. Sprinkle the cinnamon sugar mixture evenly across the surface of the batter. Carefully pour the remaining batter over the cinnamon sugar mixture to cover. Use an offset spatula to gently spread the batter evenly. Break up the crumble topping with your fingers and sprinkle evenly over the top.
- Bake for 40-45 minutes or until a toothpick inserted in the middle comes out clean.
Notes
To freeze leftovers, let the cake cool completely and wrap individual squares with plastic wrap. Place the wrapped squares in a freezer-safe container for up to 3 months.
Use the scoop and level technique to measure your flour if you do not have a kitchen scale. To do this, use a spoon to fluff up the flour in the bag. Use a spoon to scoop the flour into a measuring cup until it is heaped on top. Take a butterknife and level off the top. This should give you the most accurate measurement for flour.
Leftovers can be stored at room temperature in a container for up to 2 days or refrigerated for up to a week.
Variations and Substitutions
You can leave out the chopped pecans if you prefer a nut-free crumble. The topping will still bake into sweet, cinnamon-rich clusters, just without the nutty crunch.
Serve this cake slightly warm with coffee, tea, or a glass of milk. It also makes a lovely brunch treat because the cinnamon filling and soft crumb feel special without needing frosting or glaze.
For the best texture, measure the flour carefully using the scoop and level method from the notes. Too much flour can make the cake heavier, and this recipe is best when the crumb stays soft and moist.
Pro Tips for Perfect Sourdough Coffee Cake
Let the crumble topping cool before breaking it over the batter. This helps it form those chunky, bakery-style pieces instead of melting flat into the cake.
Spread the second layer of batter gently over the cinnamon sugar filling. An offset spatula makes this easier and helps keep the filling layer even.
Check the cake at 40 minutes. A toothpick inserted in the middle should come out clean. If it still has wet batter, keep baking until it reaches the right texture.
Avoid overmixing once the flour is added. Stir just until fully incorporated so the cake stays tender.
Storage and Reheating
Store leftovers at room temperature in a container for up to 2 days. For longer storage, refrigerate the cake for up to a week.
To freeze, let the cake cool completely. Wrap individual squares with plastic wrap, then place them in a freezer-safe container for up to 3 months.
To reheat, let the coffee cake thaw first. Warm it in the microwave in 15-second increments. You can also place a piece on a parchment-lined baking sheet and warm it in the oven at 350 degrees F for 10 minutes or until heated through.
FAQ
What does sourdough do to cake?
Sourdough starter discard adds a gentle tang and deeper flavor to cake batter. In this recipe, it balances the sweetness from the brown sugar, cinnamon, and crumble topping while working with sour cream and buttermilk to keep the cake moist and tender.
What kind of flour is best for Sourdough Coffee Cake?
All-purpose flour is best for this recipe because it gives the cake structure while keeping the crumb soft. The source recipe also uses all-purpose flour in the crumble topping and cinnamon sugar filling, so it keeps everything simple and consistent.
What is the secret to a good Sourdough Coffee Cake?
A good coffee cake needs a moist crumb, a flavorful cinnamon layer, and a topping with texture. This recipe gets moisture from sour cream, buttermilk, and sourdough starter discard, while the cinnamon sugar filling and pecan crumble make each bite sweet, cozy, and satisfying.
What are common mistakes when baking coffee cake?
The most common mistakes are measuring too much flour, overmixing the batter, and underbaking the center. Use the scoop and level method if you do not have a kitchen scale, mix just until the flour is incorporated, and bake until a toothpick inserted in the middle comes out clean.
Conclusion
This sourdough coffee cake is a keeper for anyone who loves soft, cinnamon-swirled cakes with a buttery crumble topping. It’s simple enough for a weekend bake, cozy enough for brunch, and just sweet enough to feel like a treat without being fussy.
Try it for your next slow morning or coffee break, and share how it turned out in the comments! how it turned out. If you served it with coffee or made it for family, I’d love to hear that too.
Sourdough Cinnamon Coffee Cake
Ingredients
Equipment
Method
- Make the crumble topping: Melt butter and mix with brown sugar and cinnamon. Add flour and pecans, stirring until a clumpy mixture forms. Set aside to cool.
- Prepare the cinnamon filling: In a small bowl, mix brown sugar, flour, and cinnamon. Set aside.
- Preheat oven to 350°F (175°C) and grease a 9×9-inch baking pan.
- Make the batter: Cream butter, brown sugar, and granulated sugar until smooth.
- Add eggs, vanilla, sour cream, sourdough discard, buttermilk, salt, and baking powder. Mix until combined.
- Add flour and mix until fully incorporated.
- Assemble: Pour half of the batter into the pan. Sprinkle cinnamon sugar filling evenly. Add remaining batter and spread gently.
- Top with crumble: Break topping into chunks and sprinkle evenly over the cake.
- Bake for 40–45 minutes, until a toothpick inserted in the center comes out clean.
