Heat 1 tablespoon olive oil in pan on medium high heat.
Salt and pepper chicken tenders generously on both sides.
Brown chicken tenders in pan approx 7 minutes on each side.
Remove chicken tenders from pan.
Add 1 tablespoon olive oil to pan along with onions, thyme, honey, bay leaf, and salt and pepper.
Stirring occasionally, brown onions for approx 20 minutes on medium heat.
Add apple cider (stir with a wooden spoon), and chicken stock to browned onions and bring to a boil.
Return chicken to pan, lower heat to medium/low and cook covered for 30 minutes turning chicken after 15 minutes.
Remove chicken from pan, turn heat to high and thicken sauce.
Either pour sauce over chicken, or return chicken to pot then serve.