"Tasty Chicken"

Threw this together today using ingredients I had on hand, and it came out yummy. Enjoy!

3 pounds boneless skinless chicken breasts
1 stick butter, melted
2 packages dry Italian dressing mix
1 can chicken broth
1 medium onion, thinly sliced
2 tsp thickener, like Thicken/Thin, which is carb-free

Throw everything into a slow cooker, and cook at 4 hours on high or 6-8 on low. When the chicken is cooked though, remove from the slow cooker. Strain the liquid, and puree the onions and a little liquid in a blender. Add the thickener and mix into the remaining liquid. Either microwave to a boil or bring to a boil in a saucepan until it thickens to your desired consistency.