Banana Walnut Chocolate Chip Muffins

I got this recipe off of Martha Stewart Living. The original recipe called for blueberries, but I substituted them for walnuts and chocolate chips, for obvious reasons! My dad claims that these are the best muffins in the world! :-)

Banana Walnut Chocolate Chip Muffins

1 cup whole wheat flour

3/4 cup all-purpose flour

1/4 cup wheat germ

1 teaspoon baking soda

1/2 teaspoon salt

1/2 cup butter, at room temperature

1/3 cup brown sugar

2 large eggs

3 ripe bananas

1/3 cup skim milk

1 teaspoon pure vanilla extract

1 cup chopped walnuts

1 cup chocolate chips

Instructions:

1. Preheat oven to 375 degrees. Line a 12-cup muffin pan with paper liners. In a bowl, whisk together flours, wheat germ, baking soda, and salt.

2. In a large bowl, beat butter and sugar with a mixer until light and fluffy. Add eggs, one at a time, beating well after each addition. In another bowl, mash bananas with a fork; stir in milk and vanilla.

3. With mixer on low, alternately add flour mixture and banana mixture to butter mixture, beginning and ending with flour mixture; mix just until combined. Fold in walnuts and chocolate chips.

4. Divide batter among muffin cups. Bake until a toothpick inserted in the center of a muffin comes out clean, 25 to 28 minutes, rotating pan halfway through. Let cool in pan 10 minutes; transfer muffins to a rack to cool 10 minutes more.