Low-Fat Apple Spice Muffins

INGREDIENTS

• cooking spray
• 1 cup whole wheat pastry flour
• 1 cup all-purpose flour
• 1/2 teaspoon baking soda
• 1 pinch salt
• 1/2 teaspoon ground cinnamon
• 1/4 teaspoon ground nutmeg
• 1/4 teaspoon ground allspice
• 1/4 teaspoon ground ginger
• 2 large egg whites
• 2/3 cup skim milk
• 2/3 cup nonfat plain yogurt
• 1 cup raw sugar
• 1 tablespoon canola oil
• 1/4 teaspoon vanilla extract
• 1 cup chopped peeled apple