Roast Beef And Fontina Panini

• 2 tablespoons butter
• 1 small onion, thinly sliced
• 2 tablespoons whole grain mustard
• 1/2 loaf ciabatta, split lengthwise
• 1/3 lb thinly sliced deli roast beef
• 4 slices bacon, cooked
• 3/4 cup shredded Fontina cheese

1. Preheat panini grill.
2. In a medium skillet, melt butter over medium heat.
3. Add onion, and cook for 10-12 minutes or until very tender, stirring often.
4. Increase heat to med-high, and cook, stirring constantly, until onion is caramel colored; set aside.
5. Spread mustard over cut sides of bread.
6. Top bottom half of loaf with roast beef, bacon, caramelized onion, and shredded cheese; cover with top half of loaf.
7. Place sandwich on panini grill.
8. Close lid, and grill for 6-10 minutes or until bread is toasted and cheese is melted.
9. Cut in half and serve immediately.

butter, onion, whole grain mustard, deli roast beef, bacon, fontina cheese

Taken from www.food.com/recipe/roast-beef-and-fontina-panini-482464 (may not work)