1. Prepare rice according to package directions.
2. Peel shrimp, and devein, if desired.
3. Melt butter in a large skillet over medium heat; add bell pepper and next 4 ingredients, and sauté 10 to 12 minutes or until tender. Stir in soup, shrimp, salt, and pepper; cook 3 minutes or just until shrimp turn pink. (Do not overcook.)
4. Combine shrimp mixture and rice. Pour mixture into a lightly greased 13- x 9-inch baking dish. Sprinkle evenly with 1 cup shredded cheese and 1/4 cup breadcrumbs.
5. Bake at 350° for 25 minutes or until cheese is melted.
*2 (10 3/4-oz.) cans cream of celery soup, undiluted, may be substituted.
Chicken-and-Rice Casserole: Substitute 3 cups chopped cooked chicken for shrimp and 2 (10 3/4-oz.) cans cream of chicken soup, undiluted, for cream of shrimp soup. Proceed with recipe as directed.