Tomatillo Chicken Quesadillas Recipe

Name: Tomatillo Chicken Quesadillas Recipe
Ingredients: 2 cups homemade or store-bought low sodium chicken stock; 1 bunch cilantro (1 cup leaves, stems reserved), rinsed, divided; 1 pound boneless, skinless, chicken breasts or thighs, trimmed of visible fat; 10 ounces (about 5 or 6 small) fresh tomatillos, husks removed, washed, quartered; 1 small red onion, coarsely chopped (about 1/2 cup); 2 jalapeno peppers, quartered; 2 teaspoons juice from 1 large lime; Kosher salt; 8 large flour tortillas; 8 ounces Monterey Jack cheese, shredded