Take your grilled cheese game to the next level with this gourmet twist, combining creamy cheeses and a hint of tangy mustard.
Combine the cheddar cheese, Swiss cheese, mayonnaise, mustard, and green onion in a mixing bowl until well blended.
Ensure the cheeses are evenly mixed for a consistent flavor in every bite.
Spread the cheese mixture evenly on one side of half the bread slices.
Spread the mixture all the way to the edges for a full-flavored bite.
Top with the remaining bread slices to form sandwiches.
Press gently to ensure the sandwiches hold together during cooking.
Spread softened butter on the outside of each sandwich.
Use a pastry brush for an even application of butter.
Heat a griddle over medium heat and cook the sandwiches until golden brown on both sides, flipping once.
Cook slowly to ensure the cheese melts completely without burning the bread.
Serve the sandwiches warm, optionally paired with a side of soup or salad.
Cut the sandwiches diagonally for a classic presentation.