Classic Blueberry Crumb Cake Recipe

• 2 1/2 c. all-purpose flour
• 1 tsp baking soda
• 1 tsp baking pwdr
• 1/4 tsp coarse salt
• 10 Tbsp. room temperature unsalted butter plus more
• 1 c. granulated sugar
• 3 lrg Large eggs
• 1 tsp pure vanilla extract
• 1 1/4 c. lowfat sour cream
• 3 c. blueberries Confectioners' sugar for dusting
• 1 1/2 tsp grnd cinnamon
• 1/2 tsp coarse salt
• 1/2 c. light-brown sugar - (packed)
• 1 1/2 c. all-purpose flour
• 12 Tbsp. unsalted butter room temperature

Directions