1 ½ cups all-purpose flour

¾ cup white sugar

½ teaspoon salt

2 teaspoons baking powder

? cup vegetable oil

1 egg

? cup milk, or more as needed

1 cup fresh blueberries

½ cup white sugar

? cup all-purpose flour

¼ cup butter, cubed

1 ½ teaspoons ground cinnamon

Step 1

Preheat oven to 400 degrees F (200 degrees C). Grease muffin cups or line with muffin liners.

 Step 2

Combine 1 1/2 cups flour, 3/4 cup sugar, salt and baking powder. Place vegetable oil into a 1 cup measuring cup; add the egg and add enough milk to reach the 1-cup mark. Mix this with flour mixture. Fold in blueberries. Fill muffin cups right to the top, and sprinkle with crumb topping mixture.

 Step 3

To Make Crumb Topping: Mix together 1/2 cup sugar, 1/3 cup flour, 1/4 cup butter, and 1 1/2 teaspoons cinnamon. Mix with fork, and sprinkle over muffins before baking.

 Step 4

Bake for 20 to 25 minutes in the preheated oven, or until done.