Boneless Buffalo Chicken

Name: Boneless Buffalo Chicken
Ingredients: 2/3 cup(s) reduced-fat sour cream; 2 tablespoon(s) light mayonnaise; 2 tablespoon(s) cider vinegar; 6 tablespoon(s) crumbled blue cheese; 1/2 cup(s) all-purpose flour; 1/4 cup(s) whole-wheat breadcrumbs; 2 teaspoon(s) cayenne pepper; 2 teaspoon(s) salt; 2 large egg whites; 6 tablespoon(s) hot red pepper sauce (such as Frank's or Tabasco); 1.5 pound(s) boneless chicken tenders, cut into 40 pieces; 2 tablespoon(s) canola oil; 2 teaspoon(s) unsalted butter; Celery sticks; stick(s) Carrot sticks