Fire up the grill for this healthy spin on a gourmet burger, adapted from Food Network star Robin Miller's new book, Robin Rescues Dinner (Clarkson Potter/Publishers 2009).
Mix ground chicken, chopped fresh cilantro, seasoned dry breadcrumbs, salt, and pepper. Form into 4 (1-inch-thick) patties. Coat grill with cooking spray. Grill patties and halved tomatoes, flesh-side down, over medium-high heat 6 minutes, turning, until burgers are cooked through and tomatoes are charred. Top evenly with Cheddar; let melt. Serve on buns with chopped tomatoes and guacamole.
Robin Rescues Dinner (Clarkson Potter, 2009)