Blueberry Sour Cream Coffee Cake

Serve the cake on its own or with a dusting of powdered sugar for extra sweetness. It pairs wonderfully with a cup of coffee or tea.
Store any leftover coffee cake in an airtight container at room temperature for up to 3 days or refrigerate for up to 5 days.
Variations:

Add lemon zest to the batter for a fresh, citrusy twist.
For extra crunch, add chopped nuts, such as walnuts or pecans, to the streusel filling.
Use frozen blueberries if fresh ones are not available, just make sure not to thaw them to avoid extra moisture.
FAQ:

Can I make this coffee cake ahead of time?
Yes, this coffee cake can be made ahead of time and stored at room temperature for up to 3 days. It also freezes well; wrap it tightly in plastic wrap and foil for up to 3 months.

Can I use a different fruit in place of blueberries?
Yes! You can substitute other berries such as raspberries, blackberries, or strawberries, or even try a mix of berries for a colorful variation.