In large pot of boiling, salted water, cook macaroni until tender but firm; drain. In large bowl, combine 1 1/2 c of the mozzarella, plain yogurt or sour cream, ham, cottage cheese, egg, salt and pepper. Add macaroni and mix well. Pour mixture into greased 8" square baking pan, sprinkle with remaining mozzarella. Bake, uncovered in 350ºF.oven for 30 minutes or until bubbly. Broil for 2 minutes or till lightly golden. SERVES:4 Source:_Canadian Livings Country Cooking