Whisk flour, 2 tablespoons sage, and salt in medium bowl to blend. Whisk milk and eggs to blend in large bowl; add flour mixture and whisk until batter is smooth. Whisk in 2/3 of bacon. Remove hot baking dish from oven. Using oven mitts or pot holders to protect hands, tilt dish to distribute drippings evenly. Pour batter into pan. Bake 15 minutes; reduce oven temperature to 350°F and continue to bake until golden brown and puffed, about 12 minutes longer (do not open oven door while baking).