Preheat oven to 400 F. Put paper liners into muffin tins (12). Whisk the dry ingredients, including lemon zest, together in large bowl. In another bowl, whisk remaining ingredients including lemon juice. Pour wet ingredients into dry ingredients and stir gently but quickly. A few lumps are better than overmixed batter. Spoon batter into paper-lined muffin cups. Bake 18-20 minutes or until golden. Cool 5 minutes in pan, then remove and cool on rack.