Whisk Bisquick, flour,sugar,baking powder and salt in a large bowl. Whisk milk, eggs, and oil in large bowl. Stir in zucchini, and vanilla until well blended. Stir into flour mixture until ingredients are moistened. Heat griddle to medium heat, lightly oil it. Pour about 1/3 c. batter onto griddle; Cook about 1 to 2 minutes on each side or until golden brown.
Note: Can make in a waffle iron too. Pouring about 1/3 c. batter in each square,section or heart shape.