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Servings 12 | Difficulty Easy |
1. Preheat oven to 400 degrees F (200 degrees C). Grease muffin cups or line with muffin liners.
2. To make the muffins, combine flour, 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 blueberries. Fill muffin cups 2/3 full, and sprinkle with crumb topping mixture.
3. To make crumb topping: Mix together sugar, cup flour, butter, and cinnamon. Mix with a fork, and sprinkle over muffins before baking.
4. Bake for 20 to 25 minutes in the preheated oven, or until done.