2 boneless skinless chicken breast halves (6 to 8 ounces each)
Salt and pepper to taste
1 slice (1 ounce) Swiss cheese
2 slices (3/4 ounce each) deli ham
1/4 teaspoon dried thyme
2 tablespoons mayonnaise
2 tablespoons spicy brown mustard
1 teaspoon honey
Hold sharp knife parallel to cutting board and along one long side of chicken breast; cut almost in half, leaving breast attached at one side. Open breast so it lies flat; cover with plastic wrap. Using the flat side of a meat mallet, lightly pound to 1/4-in. thickness. Remove plastic wrap and sprinkle with salt and pepper to taste.
Cut slice of cheese in half. Wrap each half in one slice of ham, folding ham over cheese to fully surround cheese. Place one ham bundle on each chicken breast. Tuck the narrow end of the chicken in towards the center for even cooking. Fold the chicken breast over the ham bundle. Sprinkle thyme over the top of each chicken breast.
Put stuffed chicken breasts into a Medium or Large Ziploc® Zip 'n Steam™ Bag, with the thickest part of the chicken toward the outer edges of the bag. Seal bag and place in microwave.
Cook on full power for 5 to 5-1/2 minutes or until a meat thermometer reads 170°. If needed, continue microwaving at 30-second intervals until chicken tests done. Allow bag to stand 1 minute before handling. Meanwhile, for mustard sauce combine all ingredients in a small bowl.
Carefully open bag. Use spatula to remove chicken from bag. Serve with mustard sauce.