Step #2 Meanwhile, saute chicken, celery, jalapenos & garlic in 1/4 c butter in skillet over med-heat/flame until chicken juices run clear when pricked with fork, onions, about 10 mins.
Step #3 remove this from skillet & set aside.
Step #4 Melt remaining 1/2 c butter in same skillet over medium-low heat.
Step #5 Stir in flour to make roux & cook this until thickened, 2 to 3 mins.
Step #6 Stir roux into boiling stock, then add chicken-vegetable mixture.
Step #7 Remove from heat & add half-and-half & cilantro, stirring until smooth.
Step #8 Garnish with sliced green onions, cheese & tortilla strips.