- Spread mustard over 4 slices of bread. Top each with 1 slice cheese, ham, pickled jalapeños and another cheese slice; cap with remaining bread. Butter outside slices of bread.
- Preheat large skillet set over medium-low heat; cook sandwiches, in batches if needed, for 2 to 3 minutes per side or until bread is golden brown and cheese melts. To serve, cut each sandwich in half.
TIPS: Serve with salsa and guacamole if desired.