Chicken Rice Casserole

Ingredients:

• 4 tablespoons margarine
• 6 to 8 ounces sliced mushrooms
• 1/4 cup all-purpose flour
• 1 can (1 2/3 cups) evaporated milk
• 1 1/2 cups chicken broth
• 3 cups cooked rice
• 2 to 3 cups chopped, cooked chicken
• 1/3 cup chopped bell pepper, green
• 1 small jar (2 ounces) chopped pimiento, drained (1/4 cup)
• salt, to taste
• buttered bread crumbs, optional

Preparation: