以前说过希望大家吃得又健康又美味，今天第一次做贡献，原方子在下面的连接里，我做了一点改动。
http://allrecipes.com/Recipe/Banana-Crumb-Muffins/Detail.aspx

Banana Crumb Muffins

INGREDIENTS
1 1/2 cups all-purpose flour
1 teaspoon baking soda
1 teaspoon baking powder
1/2 teaspoon salt
3 bananas, mashed
3/4 cup white sugar （我用了1/4杯）
1 egg, lightly beaten
1/3 cup butter, melted （我用的是1/3杯的橄榄油）
1/3 cup packed brown sugar （用量减半用了1/6杯）
2 tablespoons all-purpose flour
1/8 teaspoon ground cinnamon
1 tablespoon butter （我用了一勺橄榄油）

DIRECTIONS （在改动的地方做了相应的替换）
Preheat oven to 375 degrees F (190 degrees C). Lightly grease 10 muffin cups, or line with muffin papers.
In a large bowl, mix together 1 1/2 cups flour, baking soda, baking powder and salt. In another bowl, beat together bananas, sugar, egg and melted butter. Stir the banana mixture into the flour mixture just until moistened. Spoon batter into prepared muffin cups.
In a small bowl, mix together brown sugar, 2 tablespoons flour and cinnamon. Cut in 1 tablespoon butter until mixture resembles coarse cornmeal. Sprinkle topping over muffins.
Bake in preheated oven for 18 to 20 minutes, until a toothpick inserted into center of a muffin comes out clean.

NUTRITION INFORMATION （因为做了相应的替换，热量和糖分应该都比原方子低）
Servings Per Recipe: 10
Amount Per Serving
Calories: 264
Total Fat: 8.2g
Cholesterol: 41mg
Sodium: 375mg
Total Carbs: 46.1g
Dietary Fiber: 1.4g
Protein: 3.2g

这是成品