Step 1

Preheat oven to 375 degrees F. With a small sharp knife, make a 2-inch-wide horizontal slit in the side of each chicken breast to create a deep pocket. Stuff each pocket with 1 piece of the prosciutto or half of a piece of the Canadian bacon, folding or cutting as needed to fit.

Step 2

Spread rice in an ungreased 3-quart rectangular baking dish. Top with chicken. Bake, covered, for 25 minutes.

Step 3

Meanwhile, for sauce, in a medium saucepan melt butter over medium heat. Add green onions; cook for 3 to 5 minutes or until tender. Whisk in flour and pepper until well mixed. Add milk all at once, whisking to combine. Cook and stir over medium-high heat until thickened and bubbly. Stir in asparagus, 1/2 cup of the Parmesan cheese, and the sherry. In a small bowl combine the remaining 1/4 cup Parmesan cheese, the panko, and Italian seasoning.

Step 4

Pour sauce over chicken; sprinkle with crumb mixture. Bake, uncovered, for 25 to 30 minutes more or until chicken is no longer pink (170 degrees F).