Shells carbonara

Shells Carbonara 

Ingredients: Directions: Mix yogurt, sour cream, ham, cheese, milk, sugar and pepper in medium bowl. Set aside. Cook pasta per package directions. Place frozen peas in colander, drain pasta over peas. Toss pasta, peas and sauce together.
 * 1 cup yogurt
 * 1 cup sour cream
 * 8 ounces boiled ham cut into strips
 * 2/3 cup parmesan cheese grated
 * 1/4 cup milk
 * 1 teaspoon sugar
 * 1/2 teaspoon pepper
 * 16 ounces shell pasta
 * 10 ounces baby peas frozen