Start by slicing each chicken breast horizontally to create two thinner pieces. Place each piece between two sheets of plastic wrap and gently flatten them with a rolling pin or meat tenderizer. Aim for an even thickness to ensure uniform cooking.
Lay a slice of ham on each flattened chicken piece, followed by a slice or handful of shredded Swiss cheese. Spread the fillings evenly to make rolling easier and ensure every bite is flavorful.
Carefully roll up each chicken piece, tucking in the sides as you go. Use plastic wrap to secure the rolls tightly, twisting the ends to hold their shape. Chill the wrapped rolls in the fridge for at least 30 minutes to make breading easier.
Preheat your oven to 400°F. Unwrap the chilled chicken rolls and season them with a pinch of salt and pepper. Dip each roll into melted butter, then coat thoroughly with crushed cornflakes or breadcrumbs. Press the coating gently to ensure it sticks.
Place the breaded rolls on a greased baking sheet and bake for 25-30 minutes, or until the chicken reaches an internal temperature of 160°F. The coating should be golden and crispy, and your kitchen will smell amazing!
While the chicken bakes, mix mayonnaise and mustard in a small bowl. Adjust the mustard to your taste for a creamy, tangy sauce that pairs perfectly with the dish.