Ingredients

1 ½ cups all-purpose flour
¾ cup white sugar
½ teaspoon salt
2 teaspoons baking powder
⅓ cup vegetable oil
1 egg
⅓ cup milk, or more as needed
1 cup fresh blueberries
½ cup white sugar
⅓ cup all-purpose flour
¼ cup butter, cubed
1 ½ teaspoons ground cinnamon

DirectionsInstructions Checklist
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.

Credit: allrecipes