3 tablespoons butter, softened
1 large onion, sliced into 3 wedges
2 (3 ounce) cans chicken tenderloins
Place butter and onion in a large skillet, and saute over medium heat for about 1 minute.
Place saucepans into slow cooker. Add chicken breasts. Stir for about 1 minute, then pour sauce over chicken.
Cover stove, and allow chicken to cook 15 to 25 minutes.
Spoon sauce over meat, and cook 5 minutes more.