Carefully cut a pocket into each chicken breast - ensuring that you do not cut right through the breast
Cut each square of cheese slice into two and lay one of these halves inside pocket
Top cheese with 3 slices of pepperoni
Cover with the second half of the slice of cheese (see pic as guide)
Tuck as much as you can into the pocket area and push to close.
Repeat with each chicken breast.
I added a dollop of pizza sauce on each breast for extra flavour.
Line slow cooker with baking paper and lay chicken breasts on paper
Cover and cook on low for approx 4hrs
*note* Due to large breast size I served one per adult and my two children shared one. If feeding adults or older children increase ingredients to allow for 1 breast/1 cheese slice/ 3 pepperoni slices per serve.
I served mine with sweet potato wedges, salad and slaw :)