1cup velveeta — cubed
1/2 cup mayonnaise
1/2 cup milk
10 1/2 ounces cream of mushroom soup, condensed
1/4 teaspoon dry mustard
1can tuna in water — drained
4 to 6 ounces cooked pasta
1/2 cup saltine crackers — crushed
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Mix mayonnaise, soup, milk and mustard in 1 1/2 quart casserole dish. Add cheese, tuna and pasta. Bake covered at 350 degrees for 30 minutes. Top with cracker crumbs and bake uncovered for five minutes more.