Cinnamon Sour Cream Coffee Cake with Crumb Topping — a tender, moist coffee cake topped with a crunchy cinnamon crumb. This easy-to-follow recipe yields a flavorful cake that stays soft thanks to sour cream in the batter, while the generous crumb topping adds the perfect sweet, cinnamon crunch. It’s ideal for breakfasts, brunches, or a simple dessert with coffee or tea.

Cinnamon Sour Cream Coffee Cake
This cinnamon sour cream coffee cake combines a rich, buttery base with tangy sour cream for a moist crumb, and a sweet cinnamon topping that bakes to a crisp, streusel-like finish. The recipe is straightforward: prepare the crumb topping first, make the cake batter, spread it in a baking pan, add the topping, and bake until golden and set. The result is a classic coffee cake everyone will enjoy.
Ingredients
For the cake
- ½ cup (1 stick) unsalted butter, softened
- 1½ cups packed light brown sugar
- 2 large eggs
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 1 teaspoon ground cinnamon
- ½ teaspoon salt
- 1 cup sour cream
- 1 teaspoon vanilla extract
For the crumb topping
- ⅔ cup granulated sugar
- ⅔ cup packed light brown sugar
- 2 teaspoons ground cinnamon
- ½ teaspoon salt
- 1 cup unsalted butter, melted and cooled slightly
- 3 cups all-purpose flour
How to Make the Crumb Topping
- In a large bowl, whisk together granulated sugar, brown sugar, cinnamon, salt, and flour.
- Add the melted butter and stir until the mixture comes together.
- Fluff the mixture with a fork until it resembles coarse crumbs. Set aside while you prepare the cake batter.
How to Make the Cake
- Preheat the oven to 350°F (175°C). Grease a 13″x9″ (or similar) baking pan and set aside.
- In a large mixing bowl, cream the softened butter and brown sugar together until light and fluffy, about 2–3 minutes.
- Add the eggs one at a time, mixing well after each addition. Stir in the vanilla.
- In a separate bowl, whisk together the flour, baking soda, cinnamon, and salt.
- Add the dry ingredients to the butter mixture in batches, alternating with the sour cream, beginning and ending with the dry ingredients. Mix until just combined and smooth.
- Pour the batter into the prepared pan and spread it evenly.
- Sprinkle the prepared crumb topping evenly over the batter.
- Bake for 35 to 45 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs attached. Oven times vary, so start checking at about 35 minutes.
- Allow the cake to cool to room temperature before slicing. Optionally dust with powdered sugar just before serving.
Serving, Storage, and Tips
- Serve slices warm or at room temperature with coffee or tea. The contrast of warm cake and crunchy topping is especially pleasant.
- To store, cover tightly and keep at room temperature for a day, or refrigerate in an airtight container for several days. Bring to room temperature or warm briefly before serving.
- For a deeper cinnamon flavor, add an extra ½ teaspoon of cinnamon to the batter, or sprinkle a little cinnamon sugar between batter and topping.
- If you prefer a lighter crumb, reduce the crumb topping flour by ¼ cup and increase the melted butter slightly so the crumbs bind more evenly.
- Use full-fat sour cream for best texture; low-fat versions can make the cake slightly less tender.

Variations
- Add ½ to 1 cup chopped nuts (pecans or walnuts) to the crumb topping for extra crunch.
- Fold in 1 cup of diced apples into the batter for an apple-cinnamon version, adjusting baking time as needed.
- For a streusel swirl, reserve about half the crumb topping and layer it in the middle of the batter before adding the remaining batter and topping.
Nutrition (approximate)
Calories: 1065 kcal | Carbohydrates: 128 g | Protein: 13 g | Fat: 56 g | Saturated Fat: 34 g | Cholesterol: 196 mg | Sodium: 664 mg | Fiber: 3 g | Sugar: 47 g
Final Notes
This Cinnamon Sour Cream Coffee Cake with Crumb Topping is designed to be straightforward and reliable. It balances a moist, tender cake with a generous, crunchy topping. Follow the steps for the crumb and the batter, watch the cake toward the end of baking, and you’ll have a crowd-pleasing treat every time.