This make-ahead breakfast egg and rice casserole turns leftover rice, eggs, cheese, and cooked vegetables into a filling breakfast you can assemble tonight and bake tomorrow.
Essential Concepts
Use promptly refrigerated rice, and keep the assembled casserole refrigerated overnight; related posts: https://www.budgetbytes.com/how-to-cook-rice/ and https://www.budgetbytes.com/how-to-freeze-rice/.

