Pastitsio (Greek-Style Lasagna)

INGREDIENTS

1 lb

lean ground beef

small onion, chopped

jar (24 oz.) OLIVO by CLASSICO Traditional Pasta Sauce

2 tbsp

HEINZ Red Wine Vinegar

2 tbsp

butter

1 1/2 cups

milk

1 cup

plain nonfat Greek-style yogurt

1/4 tsp

ground nutmeg

2 cups

elbow macaroni, cooked

1/4 cup

POLLY-O Grated Parmesan Cheese