Preheat oven to 350⁰F. Lightly grease Bundt pan. Drain and rinse blueberries in cold water; set aside. Combine together the 2 packages of muffin mix with water, oil, eggs and extract until moistened, gently fold drained and fresh blueberries into batter. Transfer batter into greased Bundt pan.
Bake in preheated oven for 50-55 minutes or until light golden brown around the edges. Cool for 15 minutes; gently loosen and remove from pan. Transfer cake to cooling rack. Meanwhile, prepare a lemon glaze by combining the glaze ingredients in a bowl and stir together. Transfer cake onto a serving platter when completely cooled.
Pour over the lemon glaze and allow to set for 10 minutes before slicing and serving.