In a saucepan combine the corn syrup, brown sugar, and butter. Melt until smooth and bubbly. Spread in the bottom of an 11 x 17 in.
Overlap bread slices like dominos in pan over syrup.
In a bowl mix eggs, milk, light cream, sugar, vanilla, and salt. Bake at 350 degrees for 45 minutes, then remove foil. Bake for 10-15 more minutes or until puffed and golden brown. Slice and invert pieces to serve. Garnish with sour cream.