Cook rice according to the box instructions. Cook wild rice first, transfer to large bowl, and use same pot to cook Uncle Ben’s. As each rice is ready, transfer to large bowl.
While you are cooking the rice . . .
In large skillet, saut. sausage until cooked through. Remove meat, drain, and break into small pieces. Add sausage to rice.
Using some of the sausage fat, in the same skillet, saut. mushrooms and onions. Add to the sausage and rice.
In the same skillet, mix flour and cream together until smooth. Add chicken broth and cook over medium to medium-high heat until thickened. Add to the rice, sausage, mushroom, and onion mixture. Season with salt and pepper. Add chicken. Mix. Transfer to large buttered casserole. Top with nuts, optional.
Bake at 350° for 30 min.