A warm, sweet, and crumbly blueberry buckle coffee cake with a tender crumb and crunchy cinnamon-spiced streusel topping, perfect for breakfast or brunch.
If topping browns too quickly, tent cake with foil halfway through baking. Use cold butter for streusel topping for best crumbly texture. Gently fold in blueberries to keep them intact. For gluten-free, use 1-to-1 gluten-free baking blend. For vegan, substitute dairy-free butter, plant milk, and flax eggs.
Keywords: blueberry buckle, coffee cake, breakfast, brunch, streusel topping, easy recipe, homemade, old-fashioned