Directions

1. Combine giardiniera, Hellmann's® or Best Foods® Real Mayonnaise and horseradish in small bowl; set aside.
2. Heat oil in 12-inch nonstick skillet over medium-high heat and cook green peppers and onion, stirring occasionally, until vegetables are tender, about 7 minutes.
3. Heat broth in 2-quart saucepan over medium heat, then add roast beef; heat through.
4. Evenly spread mayonnaise mixture on rolls, then top with roast beef, peppers and onions. Spoon any remaining au jus over sandwiches.