Cheesy Tuna Casserole

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This is an old family recipe that i think came from kraft tv recipe collections when i was a kid...a long time ago. we liked it growing up and my kids loved it when they were growing up and are now fixing it for their kids. we have changed it a little.

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Steps

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Heat oven to 350f.

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Prepare mac and cheese as directed on the package , except using 3 / 4 cup milk.

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Cook onion , green or red pepper and celery in butter until tender.

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Add to the prepared mac and cheese the remaining ingredients.

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Mix well.

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Pour into a 1 1 / 2-quart casserole.

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Bake 30 minutes.

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Garnish with pepper rings if desired.

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Ingredients

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kraft macaroni and cheese, onion, green bell pepper, celery, butter, cream of celery soup, tuna, mushrooms