IN A MEDIUM BOWL, WHISK TOGETHER THE WHOLE EGGS, EGG YOLKS, HALF-AND-HALF, SUGAR, AND VANILLA. SET THE CUSTARD MIXTURE ASIDE. SLICE THE CROISSANTS IN HALF HORIZONTALLY. IN A 10 BY 15 BY 2 1/2-INCH OVAL BAKING DISH, DISTRIBUTE THE BOTTOMS OF THE SLICED CROISSANTS, THEN ADD THE RAISINS, THEN THE TOPS OF THE CROISSANTS (BROWN SIDE UP), BEING SURE THE RAISINS ARE BETWEEN THE LAYERS OF CROISSANTS OR THEY WILL BURN WHILE BAKING. POUR THE CUSTARD OVER THE CROISSANTS AND ALLOW TO SOAK FOR 10 MINUTES, PRESSING DOWN GENTLY.