Whole Wheat Banana Muffin

Ingredients:

• 1/2 cup (1 stick) melted butter (or replace with canola oil)
• 1/4 cup granulated sugar or packed brown sugar (skip if you want less sugar)
• 2 eggs, at room temperature
• 1 cup all-purpose flour
• 1 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 cup whole-wheat flour
• 1 cup or 3 large ripe bananas
• 1 teaspoon vanilla extract
• t1/2 cup walnuts, chopped
• 1/4 cup blueberries (optional)
• 1 teaspoon lemon or orange zest (optional)

Methods:

• in a bowl, mix all purpose flour, baking soda, salt together.
• whisk egg with sugar, lemon zest and vanila until lighty foamed.
• gradually fold in flour mixture into egg. few strokes just to wet the dry mixture.
• add banana and whole wheat flour. mix them and wet all dry ingredients.
• do not over mix. It's ok if mixture is lumpy.
• scope mixture into muffin cups and top each with walnuts and blueberries. lightly press nuts and berries into the mixtures.
• bake at 350F