recipe for chicken ala king

Ingredients: 2 tablespoons butter 1 small onion, finely chopped 1/2 cup green bell pepper, finely chopped 1/2 cup red bell pepper, finely chopped 1 cup sliced mushrooms 1/4 cup all-purpose flour 1 1/2 cups chicken broth 1 cup heavy cream 2 cups cooked chicken, diced 1 cup frozen peas, thawed