Carrot Casserole with Cheese

8 cups sliced carrots 
1 large onion, diced 
1 tablespoon butter 
1/4 cup heavy cream 
1/2 teaspoon salt 
1/2 teaspoon ground black pepper 
1 1/2 cups Grated cheese (Swiss,Munster or processed Cheese food)
1/2 cup fine dry bread crumbs 
 
Preheat oven to 350 degrees F 
Bring a large pot of salted water to a boil. 
Add carrots and cook until tender but still firm, about 15 minutes. 
Drain and place in a 2 quart casserole dish. Stir in onion, butter, cream, salt, pepper and cheese; mix well. 
Sprinkle bread crumbs over the top. 
Bake in preheated oven for 50 minutes