I found a recipe for the Cafe Rio Chicken in my ward cookbook from Wisconsin. I don't know that it really is the Cafe Rio recipe but it sure is good! It was very easy too. We made tacos with the chicken and they were delicious! I bought some dressing at Rio to put on the tacos and it made them extra tasty. Also, I halved the recipe but you could make the full recipe then freeze whatever chicken you don't use to make something later. Enjoy!
5 lbs. boneless chicken breasts
1 small bottle Italian dressing
1 Tbls. chili powder
1 Tbls. cumin
3-4 cloves garlic minced
Put in crockpot and cook on low for 6 - 8 hours. Shred and serve.