I used 1/2 onion, 3/4 red apple, and celery. I diced them all and sauteed them to warm it through then added two slices cubed bread. I seasoned it with salt, pepper, 1 teaspoon chicken seasoning. I butterflied the tenderloin and pounded it to about 1/2 inch and then stuffed and rolled it. My tenderloin was pretty small so I didn't add extra bread. No bacon but but rolled prosciutto ham around the tenderloin. It also looked much better since all the stuffing was rolled inside and looked nice when sliced. The prosciutto ham might have been good in the stuffing instead.