Chicken Cordon Bleu

3 boneless chicken breasts, boned
3 Swiss cheese slices, halved
3 ham slices, halved
2 tablespoons butter
1 can cream of mushroom soup
3 tablespoons milk
1 tablespoon sherry (optional)
1/4 teaspoon seasoned pepper

Flatten chicken breasts with wooden mallet. Cover each half breast with a slice of cheese and ham (thinly sliced ham). Secure with toothpicks.

In skillet, brown chicken in hot margarine. Arrange in crock pot. Combine soup and remaining ingredients and pour over chicken. Cover crock pot and cook on LOW for 4 to 5 hours.