preheat oven to 400° F. Grease muffin cups or line with pan liners.

combine 1 1/2 cups flour , 3/4 cup sugar salt and baking powder .place vegetable oil in 1 cup measuring cup add the egg and enough milk to fill the cup.mix with flour mixture . fold in blueberries . fill muffin cups right to the top and sprinkle with crumb topping mixture.

to make crumb topping mix 1/2cup sugar , 1/3 cup flour ,1/4 cup butter and 1/4 teaspoon of cinnamon ,mix with a fork.