Impossible Chicken ‘N Broccoli Pie



1 package (10 ounces) chopped fresh or frozen broccoli
3 cups of shredded cheddar cheese (12 ounces)
1-1/2 cups cut up cooked chicken
2/3  cup chopped onion
1-1/3 cups milk
3 eggs
¾ cup Bisquick baking mix
¾ teaspoon salt
¼ teaspoon pepper
Heat oven to 400. Grease pie plate, 10 by 1-½  inches. Rinse broccoli under running cold water to thaw; drain thoroughly. Mix broccoli, 2 cups of the cheese, the chicken and onion in plate. Beat milk, eggs, baking mix, salt and pepper until smooth, 15 seconds in the blender on high or 1 minute with hand beater. Pour into plate. Bake until knife inserted in the center comes out clean, 25 to 35 minutes. Top with remaining cheese. Bake just until cheese is melted, 1 to 2 minutes longer. Cool 5 minutes. 6 to 8 servings.