Preheat oven to 400F
Add 1 and 1/2 cup flour, 3/4 cup sugar, 1/2 tsp salt, and 2tsp baking powder to bowl
Add 1/3 cup milk, 1/4 cup oil, and 1 egg to measuring cup
Mix dry and liquid components and fold in blueberries(6-8oz).
Combine 1/4 cup butter,1/2 cup sugar, 1/3 cup flour and 1 and 1/2 tsp cinnamon to make crumb
Fill muffin liners, sprinkle on crumb and bake for 20-25 minutes