Dress up plain-Jane grilled cheese sandwiches with fancy cheeses, and a bit of truffle oil, for a new variation on a classic finger food. Make these on Super Bowl Sunday and use a football-shaped cookie cutter instead of trimming off the crusts for a fun appetizer.
Add a few drops of truffle oil or chile oil to the melted butter, if you want to be fancy.
Place a piece of wax paper on each of 2 baking sheets. Spread out 10 pieces of bread on each baking sheet. Using a pastry brush, brush each piece with butter and turn it over, or if you don't have a pastry brush, just drizzle with butter. Sprinkle two tablespoons cheese on each bread slice and cover with spinach or arugula.
Place the other piece of bread on top and butter the top of the bread completely.
You can cook the sandwiches in a large frying pan or on a griddle. Spray a frying pan with olive oil spray and bring to medium-high heat. Place 4–5 sandwiches in the pan and let them brown for 2–3 minutes. Flip them over and cook for 2–3 minutes, or until brown. I press a weight on the top of the sandwiches to get them crispy, but you can use a spatula to hold each one down.
To serve, cut off the crusts, then cut each sandwich into 6 bite-size pieces. Serve warm.