Spread strawberry jam on a slice of bread. Layer it with 1 slice of cheddar cheese and 2 slices of ham.
Place another slice of bread on top. Again, spread strawberry jam and layer with 1 slice of cheese and 2 slices of ham.
Place the final (third) slice of bread on top to complete the triple-decker.
Prepare the Egg Wash: In a shallow bowl, whisk the eggs and milk together until well combined.
Dip the assembled sandwich into the egg mixture. Ensure all sides, including the edges, are thoroughly soaked.
Preheat a pan over low heat and melt the butter. Place the soaked sandwich in the pan and cook until golden brown on both sides.Note: Make sure to keep the heat low. High heat will burn the exterior before the cheese inside has a chance to melt. Aim for a golden crust and perfectly melted cheese.
Slice the finished Monte Cristo into four triangles and dust with powdered sugar.
Serving Tip: It tastes even better when served with an extra side of strawberry jam for dipping or spreading!