1. Combine all ingredients in large bowl; mix lightly with fork; spoon into loaf pan, 9x5x3-inches; invert onto shallow pan; carefully remove loaf pan; score top of loaf lightly.
2. Bake in moderate oven (375°) for 1 hour and 15 minutes or until rich golden brown on top.
3. For party serving, place loaf on plank or ovenproof platter; edge with mashed potatoes, and tomato halves brushed with a parsley-butter sauce; broil for 10 minutes or until potatoes are light brown.