½ cup half and half
⅓ cup orange juice
3 Tbsp orange flavored liqueur or orange juice
2 Tbsp sugar
¼ tsp vanilla
¼ tsp salt
16 slices French bread, cut thick
½ cup butter
⅓ cup sugar
⅓ cup frozen (thawed) orange juice concentrate
Beat eggs, half and half, orange juice, liqueur, sugar, vanilla, and salt in small bowl with fork. Dip bread into egg mixture, soaking thoroughly; place in ungreased pan. Pour any remaining sauce over bread. Cover loosely and refrigerate overnight or at least 8 hours, but no longer than 24.
Make orange syrup; melt butter in saucepan. Add sugar and orange juice concentrate, stirring until sugar is dissolved. Remove from heat; cool slightly. Beat with wire whisk until thick and shiny.
Heat griddle to 375 degrees; grease with butter. Cook bread 4 to 5 minutes per side.