Start by making the crumb top. Melt butter and add the rest of the crumb topping ingredients to it. Mix well and set aside.
Mix together dry ingredients in a small bowl. In a large mixing bowl, mix together all the wet ingredients. Add dry ingredients into wet ingredients, stir to mix well. Toss blueberries in flour and fold into batter.
Pour bread mixture into a prepared bread pan. Evenly spread crumb topping on the top of the bread mixture. Gently press on crumb topping so that it sticks to bread after baking. Bake for about 60 minutes at 350°F.
Allow to cool for 10 minutes, remove from pan and allow to cool for another 10 minutes. Slice And Serve!