Slice onions crosswise and separate into rings. Combine milk, eggs and salt to taste in mixing bowl. Soak onion rings in mixture 30 minutes. Place pancake mix in shallow bowl. Heat oil for frying in skillet to 375 degrees. Remove onion rings from milk mixture, dip in pancake mix and place in hot oil. Fry rings until golden brown.
Drain fried onion rings on paper towels. Pack fried onion rings solidly, but loosely, without pressing, into 8x4-inch loaf pan Bake at 400 degrees 10 to 15 minutes. Turn onto serving plate. Garnish with parsley.