You can make this ahead, broil at party or wrap in foil (non stick) and heat on a grill.  Because there is no standard French bread/baguette loaf, plan on two inches per person.  

Ingredients:

• 6 Tab butter, softened
• 1 env. (0.7 oz.) Italian salad dressing mix
• 1/2 c jack cheese
• 1/4 c Parmesan Cheese
• 1 French bread baguette (16 oz.), cut in half lengthwise

Directions:

1. Heat broiler.
2. Mix butter, dressing mix and cheeses until blended.
3. Spread onto cut surfaces of both halves of the bread.
4. Place on baking sheet.
5. Broil 3 to 5 min. or until cheese mixture is bubbly.
6. Cut into 24 slices.

Serves:  12

Source:  Kraft – Good Seasons