Beef salad sandwiches

I thought this was a fun idea and that I'd pass it along. We just had beef salad sandwiches the other day. I've only ever had chicken salad, tuna salad, egg salad....but this lady uses her leftover Sunday roast beef and adds these ingredients to it. She didn't have measurements, but I thought I could probably handle it. Beef, chopped sweet onion, chopped celery, chopped Dave's spicy pickle spears, Mayo, honey mustard and salt and pepper. It was SO good. Plus I love awesome ideas for leftovers