This fluffy, cinnamon-swirled coffee cake uses sourdough discard to create a moist, flavorful batter topped with a crunchy streusel. It’s perfect for breakfast, brunch, or dessert, and easy to make for any occasion.
For the Sourdough Coffee Cake Batter:
½ cup unsalted butter, softened to room temperature
1 ¼ cups white sugar
2 tsp pure vanilla extract
2 large eggs (room temperature)
1 cup whole milk
1 cup sourdough discard (or active starter, fed or unfed)
4 tsp baking powder
3 cups all-purpose flour (spoon & leveled)
For the Cinnamon Sugar Filling & Topping:
1 ¼ cups brown sugar, packed
5 tbsp all-purpose flour
4 tsp ground cinnamon
6 tbsp unsalted butter, melted
The total time is just over an hour, mostly hands-off. Brew coffee while the cake bakes for a perfect pairing.
Make sure your batter is thick enough so the streusel doesn’t sink during baking.