Remove blueberries; rinse and drain on paper towels.
Blend milk and egg together and stir into muffin mix.
Quickly fold in nuts and blueberries (batter should be lumpy).
Pour into a greased 5 x 9-inch loaf pan.
Mix sugar and cinnamon and sprinkle over top.
Bake for 50 minifies at 375Â° F.
Cool before slicing.