In a saucepan combine brown sugar, margarine and corn syrup. Bring to a full boil, reduce heat to medium and simmer until thickened (approx. 2-3 minutes). Pour mixture into a greased 9x13-inch baking dish. Place bread evenly in pan. Beat eggs and add all other ingredients. Pour over bread. Cover and refrigerate overnight.
In the morning, bake, uncovered 45 minutes in a 350-degree oven, until light brown.
Serve with warm syrup.