In a microwave-safe container, combine 1/2 cup sugar and 1 cup water.

Microwave the mixture in 30-second increments until it turns a dark amber color, which typically takes around 5 minutes.

Carefully remove the container from the microwave using oven mitts, as it will be extremely hot. Transfer to a surface that will not become damage from the heat.

Quickly dip a watermelon stick into the hot sugar mixture, ensuring it is fully coated. Be cautious to avoid burns.

Immediately place the coated watermelon stick into the ice bath for a minute to set the candy coating.

Remove from the ice bath and repeat the process with the remaining watermelon sticks.