01 - 
                Preheat oven to 375°F. Lightly grease a 9×13-inch baking dish.
              
              
              
                02 - 
                Split croissants and layer with cheese, ham, and more cheese.
              
              
              
                03 - 
                Mix softened butter, mustard, honey, and Worcestershire sauce until smooth.
              
              
              
                04 - 
                Spread butter mixture inside each croissant sandwich.
              
              
              
                05 - 
                Brush tops with egg white wash, sprinkle with poppy seeds. Bake 15-18 minutes until golden and cheese melts.