Boil fructose and syrup with milk or water. Boil until it reaches the "soft ball stage." You'll know you've hit the soft ball stage when you take a drop of the mixture between you thumb and index finger, pull your fingers apart, and see the drop form a string.(kind of like pulling a slice of cheesy pizza and seeing a string of cheese between slices.)
Take the pot off the stove. Add peanut butter and carob powder. Stir vigorously until you see a stringy texture (kind of like a paved road or neatly combed hair). While the mixture is still fairly liquid, pour it into a pan and flatten it out to a uniform layer about 3/4 in. thick.
A tasty variation is pouring it over mini veganmellows, carob chips and shredded coconut. Flip it out of the pan then cut.