Taco salad dip and chips

Today my grandson, Brayden, is celebrating his 4th birthday with a pizza party and Dan Dan the Choo Choo Man coming to give everyone rides on his train.  I'm bringing this party dip:

1 lb. ground beef or turkey
1 package taco seasoning mix ( I used the reduced sodium)
1 cup water
1  4oz. can diced green chilis
1  16 oz. can refried beans
1/4 tsp. cayenne pepper (optional)
1 1/2 pints sour cream
6-8 oz. finely shredded cheese( colby, cheddar, mexican)

Toppings:
1 small tomato, seeded and diced
1  2.25 oz. can sliced black olives
1 green onion finely sliced
2 cups finely shredded lettuce

Brown the meat and drain.  Add the seasoning mix, water,chilis, refried beans, and cayenne pepper.  Blend well and simmer for about 7 or 8 minutes until the mixture thickens.  Cool and spread into a 9x13 baking pan. Spread the sour cream over the top. (At this point cover and chill a few hours or even overnight)

Sprinkle the cheese over the sour cream and then add all the toppings. Cover and chill until ready to serve.
Serve with tortilla chips.