Bistro Burger

Directions

1. 1
   Heat grill to medium-high heat.
2. 2
   Shape meat into 4 (1/2-inch-thick) patties.
3. 3
   Place mushrooms and onions on sheet of foil; drizzle with oil.
4. 4
   Grill patties 5 to 6 min.
5. 5
   on each side or until done (160F).
6. 6
   Meanwhile, grill vegetables (on foil) 4 to 5 min.
7. 7
   or until crisp-tender; remove from grill.
8. 8
   Top burgers with cheese.
9. 9
   Place rolls, cut-sides down, on grill.
10. 10
    Cook 1 min.
11. 11
    or until cheese is melted and buns are lightly toasted.
12. 12
    Mix mayo, horseradish and chives; spread onto rolls.
13. 13
    Fill with burgers and vegetables.