Use broccoli flowerets and stems, cut carrots diagonally into 1/4 inch slices. Cook pasta according to package directions. Add broccoli and carrots for the last five minutes.

Whisk together milk, sour cream, mustard, salt and pepper and half the Parmesan cheese in a small saucepan. Place over medium-low heat, stirring to heat through.

Drain pasta, toss with the sauce, bacon and the remaining Parmesan cheese in serving bowl.