Banana Chocolate Chip Muffins

I made these muffins for the guys last weekend and they are phenomenal. I'm totally in love with this recipe. Its going in the recipe box.  2 cups all-purpose flour  1/2 cup packed brown sugar  1 tbsp. baking powder  1 tsp. baking soda  1/2 tsp. salt  1 cup chocolate chips  2 cups mashed very ripe bananas (about 4 large)  1/2 cup (1 stick/4oz/113g) butter or stick margarine, melted  1/4 cup milk  2 eggs  1 tsp. vanilla extract

Instructions: Preheat oven to 375°F (190°C). Grease pans or fill them with muffin cups.  In large bowl combine flour, sugar, baking powder, baking soda and salt. Stir in chocolate chips.  In small bowl, blend bananas, melted margarine, milk, eggs and vanilla. Add to flour mixture, stirring only until just blended (do not over mix). Fill muffin cups.  Bake for 18 to 22 minutes, or until golden brown and toothpick inserted into center comes out clean. Let stand several minutes before transferring to wire rack to cool.  Makes 12 large muffins.  Tip: Use a spring-release ice cream scoop to spoon batter into muffin cups.