Ham and Cheese Bake

1 cup shredded cheddar cheese, divided
3/4 cup part skim ricotta cheese
1/3 cup skim milk
1/4 cup low fat sour cream
1/4 cup chopped green onion
2 tbsp grated parmesan cheese
1/2 tsp black pepper
2 medium red skinned potatoes, cooked and diced (about 2 cups)
1 cup small broccoli flowerets, cooked
1 cup diced cooked ham

Preheat oven to 350 F. Spray a 1 1/2 quart casserole with cooking spray; set aside.

In a large bowl, combine 3/4 cup of cheddar, ricotta, milk, sour cream, green onion, parmesan and pepper. Mix well. Add potatoes, broccoli, and ham to the cheese mixture. Stir until thoroughly coated. Spoon potato mixture into prepared casserole and smooth the top. Sprinkle the remaining cheddar over top. Cover the casserole tightly with foil, bake until golden brown and heated through, about 10 minutes.