Mixed berry pancakes with honey berry topping

Name: Mixed berry pancakes with honey berry topping
Ingredients: 3 cup white whole wheat flour (or all-purpose flour); 3/4 cup whole wheat flour; 1/4 cup sugar; 2 tablespoon plus 1 ¼ teaspoons baking powder; 1 1/2 teaspoon salt; 2 bags (16 ounces each) frozen mixed berries, about 8 cups total; 1 tablespoon balsamic vinegar; 2 to 4 tablespoon honey, plus more for serving; 1 stick (½ cup) unsalted butter, plus more for cooking; 1/2 cup vegetable oil such as expeller-pressed canola or sunflower oil, plus more for cooking; 6 large eggs; 2 1/2 cup skim milk; 1 cup nonfat plain greek yogurt, plus more for serving