The Best Blueberry Muffins

Why I Love This Recipe
Another recipe from a southern cookbook. These are great.
Ingredients You'll Need
1-1/2 cups of flour
¾ cup of white sugar
½ teaspoon of salt
2 teaspoons of baking powder
1/3 cup of vegetable oil
1 egg
1/3 cup of milk
1 cup of fresh blueberries, sprinkled with 1 tablespoon of flour
½ cup white sugar
1/3-cup flour
¼ cup butter, cubed
1-1/2 teaspoons of cinnamon
Directions
Preheat the oven to 400 degrees.
Grease muffin cups or line with cupcake liners.
Combine 1-1/2 cups flour, ¾ cup sugar, salt and baking powder.
Place vegetable oil into a 1-cup measuring cup; add the egg and enough milk to fill the cup.
Mix this with the flour mixture.
Fold in the blueberries.
Fill the muffin cups ¾ full and then sprinkle with the crumb topping mixture.
To make the crumb topping:
Mix together ½ cup sugar, 1/3 cup of flour, ¼ cup butter, and 1-1/2 teaspoons of ground cinnamon. Mix with a fork or pastry blender.
Bake 20-25 minutes or until done.