Chicken Roll ups

This is a recipe I got from my Mom. I have always loved these, and I'm glad my kids do as well.

Chicken Roll ups
2 C. cooked chicken, diced
6 oz. cream cheese (don't tell my hubby! shhhh!)
1/4 C. margarine, softened
salt and pepper to taste
1/2 c. celery, diced
1/4 c. onion, diced (optional... I use minced onion flakes)
1 egg, beaten
2 packages crescent rolls

GRAVY
1 can cream of chicken soup
1/2 can water or milk

Mix chicken, cream cheese and margarine. Season with salt and pepper. Add diced celery and onion. Unroll crescent rolls; Add a spoonful of mix to each roll and roll up, sealing the edges. Brush with a beaten egg. Bake at 325 for 30-40 minutes or until golden brown. Make gravy by warming up soup and water or milk.