This moist cinnamon coffee cake is layered with a sweet, buttery streusel crumb topping. Perfect for breakfast, brunch, or dessert, it's rich in flavor and pairs wonderfully with a hot cup of coffee or tea.
Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish or line with parchment paper.
Make the Batter:
In a large bowl, mix flour, sugar, baking powder, baking soda, and salt. Add butter, sour cream, eggs, and vanilla. Beat until smooth.
Prepare the Streusel:
In a separate bowl, combine brown sugar, flour, cinnamon, and melted butter. Mix until crumbly.
Assemble the Cake:
Pour half the batter into the prepared pan. Sprinkle half the streusel over the batter. Repeat with remaining batter and streusel.
Bake:
Bake for 35–40 minutes or until a toothpick comes out clean. Let cool before slicing.
Notes
Make Ahead: You can bake the cake a day ahead and store it covered at room temperature. It also freezes well for up to 2 months.Customizing the Flavor: Add chopped pecans or walnuts to the streusel for a nutty crunch. Swap sour cream with plain Greek yogurt for a lighter version.Serving Suggestions: Serve warm with coffee or tea. Add a dollop of whipped cream or a drizzle of glaze for extra sweetness.Allergy-Friendly Options: Use dairy-free butter and yogurt to make it dairy-free. Substitute a gluten-free flour blend if needed.Storage Tips: Store in an airtight container at room temperature for 3 days or refrigerate for up to a week. Reheat individual slices in the microwave.