1-1/2 cup flour
3/4 cup white sugar
1/2 tsp. salt
2 tsp. baking powder
1/4 tsp. cinnamon
1/3 cup vegetable oil
1 egg
1/3 cup milk
3/4 cup fresh (or frozen) blueberries
Topping (optional):
1/2 cup white sugar
1/3 cup flour
1/4 butter, cubed
1-1/2 tsp. ground cinnamon
Preheat oven to 400 degrees. Grease muffin pan (works very well with non-stick spray) or line with paper cups.
Combine 1-1/2 cups flour, 3/4 cup sugar, salt, and baking powder. Place vegetable oil into a 1 cup measure; add the egg and enough milk to fill the cup. Mis this with flour mix. Fold in blueberries. Fill muffin cups to the top, and sprinkle with crumb topping.
To mix the crumb topping: combine 1/2 cup sugar, 1/3 cup flour, 1/4 cup butter, and 1-1/2 tsp. cinnamon.
Bake for 20 to 25 minutes in preheated oven, or until done.
Double the recipe and fill to the top edge for extra generous muffins.