Cheddar and Monterey Jack Panini

Source: I Love Cheese

Gerry Lantto, Golden Valley, Minnesota
Contest Winner, 2004 

1 to 2 tablespoons mayonnaise or salad dressing 
2 thick slices French bread, cut on an angle 
1 slice Cheddar cheese 
1 slice Monterey Jack cheese 
2 thin slices ripe tomato 
sprig of fresh basil leaves 
freshly ground black pepper 
1 to 2 tablespoons of butter 

Spread mayonnaise on 1 side of each slice of bread. Layer cheeses, tomato and basil leaves on bread. Add pepper to taste. Spread butter on the outside of bread slices and grill until cheese melts.