375g Due North GF All-Purpose Flour
3 1/2 tsp baking powder
1/2 tsp baking soda
1/8 tsp salt
1/2 tsp cinnamon
1 cup white sugar
1/3 cup unsalted butter, melted & slightly cooled
3 large eggs (2 eggs + 1 egg white)
1/3 cup sour cream
1/3 cup canola oil
1 cup milk
1 TBS white vinegar
1 cup blueberries
1/2 cup wild blueberries
CRUMB TOPPING
1/2 cup white sugar
105g Due North GF All-Purpose Flour
1/2 tsp cinnamon
6 TBS butter