Mushroom, Onion & Pepper Smothered Burgers

-  2 Tbsp. I Can't Believe It's Not Butter!® Light Spread, divided -  1 container (8 oz.) sliced mushrooms -  2 medium green, red and/or yellow bell peppers, sliced -  1 medium onion, thinly sliced -  1 lb. lean ground beef or turkey, shaped into 4 patties -  4 whole grain Kaiser rolls or hamburger buns, split and toasted

Melt 1 tablespoon I Can't Believe It's Not Butter!® Light Spread in 12-inch nonstick skillet over medium-high heat and cook mushrooms, stirring frequently, 5 minutes or until golden; remove mushrooms from skillet and keep warm.

Melt remaining 1 tablespoon I Can't Believe It's Not Butter!® Light Spread in same skillet over medium heat and cook green peppers with onion, stirring frequently, 10 minutes or until very tender. Add to mushrooms and keep warm.

Cook burgers in same skillet over medium-high heat, turning once, 5 minutes or until burgers are thoroughly cooked. Serve on rolls, then top with mushrooms, peppers and onion.