SPREAD THE BUTTER AND PEANUT BUTTER ON FOUR SLICES OF THE BREAD. Spread the jelly on top of the peanut butter, then cover with the remaining bread slices to make four sandwiches. Place them in an ovenproof dish.
WHISK THE CREAM, CASTER SUGAR AND EGGS TOGETHER IN A MIXING BOWL. Pour this custard over the bread and let it soak in for 15 minutes.