This is adapted from the Starbucks Coffee cookbook they put out a few years ago...
List of Ingredients
TOPPING
1 cup all-purpose flour
1/2 cup sugar
1 teaspoon ground cinnamon
1/4 cup butter
CAKE
2 eggs
2 cups milk
1 cube butter -- melted
4 cups flour
1 cup sugar
5 teaspoons baking powder (1 tbsp. and 2 tsp.)
1 teaspoon salt
1 teaspoon sweet spice (from Spice Hunter)
2 cups fresh or frozen blueberries
Recipe
Preheat oven to 350 F. Grease a jelly roll pan (15x10).
Topping: Combine flour, sugar and cinnamon. Blend in the butter with pastry blender, until mixture is crumbly. Set aside.
Cake: In a large bowl, beat together the egg, milk and butter. Sift the flour, sugar, baking powder, salt, spice into a small bowl and add to egg mixture. Beat until just blended. Gently stir in blueberries. Spread batter evenly in the prepared pan and sprinkle with the topping. Bake until a wood toothpick inserted in center comes out clean, 30-35 minutes. If you are using frozen blueberries, it may take a bit longer. Cover with foil if it's browning too fast. Serve warm from pan.