Alfredo Casserole

I was trying to make chicken-noodle casserole and didn't have the ingredients for the sauce, so I used Alfredo sauce instead and this is what I came up with...

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chopped celery (5 or 6 stalks maybe?)

1/2 large onion, chopped

1 red pepper, chopped

1 can chicken

1 jar Alfredo sauce

3 cups (?) cooked egg noodles

*Mix all together in large casserole dish.  Top with crushed croutons (drizzled with butter, of course!), and bake for 30 minutes at 350.