Roast Beef and Fontina Panini

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

Step-by-step instructions

1. 1

   Preheat panini grill.

2. 2

   In a medium skillet, melt butter over medium heat.

3. 3

   Add onion, and cook for 10-12 minutes or until very tender, stirring often.

4. 4

   Increase heat to med-high, and cook, stirring constantly, until onion is caramel colored; set aside.

5. 5

   Spread mustard over cut sides of bread.

6. 6

   Top bottom half of loaf with roast beef, bacon, caramelized onion, and shredded cheese; cover with top half of loaf.

7. 7

   Place sandwich on panini grill.

8. 8

   Close lid, and grill for 6-10 minutes or until bread is toasted and cheese is melted.

9. 9

   Cut in half and serve immediately.