2. In large kettle, bring water to boiling. Add noodles and return to boiling; boil 3 minutes. Drain and rinse with cold water.

3. Meanwhile, in small saucepan, combine soup and milk, stirring until smooth.

4. Add onion, mustard, and sour cream, stirring to combine well.

5. In prepared casserole, layer half the noodles, ham and sauce. Repeat.

6. Toss bread crumbs with butter; sprinkle over casserole. Top with cheese.

7. Bake, uncovered, for 25 to 30 minutes, or until golden brown. Makes 6 servings.