Blueberry Buckle

Name: Blueberry Buckle
Cuisine: American
Ingredients: 2 cups (255 grams) plain or partially whole wheat flour; 1 tsp baking powder; 1/2 tsp salt; 1/2 tsp ground ginger; 1/4 cup (55 grams) of softened butter; 3/4 cups (150 grams) organic sugar; 1 egg; 1/2 cup milk; 3 cups fresh or frozen blueberries; Topping; 1/2 cup organic sugar; 1/3 cup flour; generous grating of nutmeg (optional); 1/4 cup (55 grams) cold butter cut into cubes