Mexican grilled cheese sandwich recipe

1 pkg (6oz) Swiss cheese slices
1 pkg (6oz) thinly sliced ham
4 tsp salsa
8 (10-inch) flour tortillas
2 tbs butter or margarine

Arrange cheese and ham slices evenly over 4 tortillas. Spread 1 tsp salsa over each; top with remaining tortillas. Spread butter on outside of top tortilla; invert sandwiches onto a hot skillet or griddle. Cook until tortilla is lightly browned. Spread butter on ungrilled side; carefully turn and cook until lightly brown and cheese is slightly melted.