Chicken and Broccoli Pie

Heat oven to 400 degrees F. Grease pie plate, 10 x 1 1/2". Rinse broccoli in cold water to thaw; drain thoroughly. Mix broccoli, 1 1/3 c. of the cheese, the chicken and onion in pie plate. Beat milk, eggs, baking mix, salt and pepper 15 seconds in blender on high speed, 1 min. with wire whisk or hand beater or until smooth. Pour into pie plate. Bake 30-35 min. or until knife inserted comes out clean. Top with remaining cheese. Bake 1-2 min. longer or just until cheese is melted. Cool 5 min.