Preheat oven to 400°
Grease muffin cups or line with muffin liners.
Combine in a large bowl:
1 ½ cups all-purpose flour
¾ cup white sugar
½ teaspoon salt
2 teaspoons baking powder
In a 1 cup measuring cup, mix together:
⅓ cup vegetable oil
1 egg
⅓ cup milk
This should be enough to fill up the measuring cup.
Pour liquid mixture into the flour bowl, mix.
Fold in 1 cup fresh blueberries.
Make Crumb Topping
Mix together:
½ cup sugar
⅓ cup flour
¼ cup butter
1 ½ teaspoons cinnamon
Mix with fork.
Fill Muffin Tins and Bake
Fill muffin cups right to the top and sprinkle with crumb topping mixture.
Bake for 20-25 minutes or until done.