In medium saucepan, combine blueberries and 1/2 cup sugar. Bring to a boil; remove from heat.
Preheat oven to 350 degrees. Place butter in 9X13 baking dish and place in oven while preheating.
Combine flour, remaining sugar, baking powder, salt, milk, vanilla, and almond extract in a small bowl. Pour over melted butter. Do not mix.
Spoon blueberries and syrup over batter. Do not mix.
Bake 45 minutes or until golden brown.