Spread on roasting tray, adding olive oil and spices evenly. (Tip: to make this easier, add olive oil, spices, garlic and sweet potato into separate bowl and toss for a 30 seconds.)
Roast for 20 mins at 180 degrees Celsius (356 degrees Fahrenheit) using a fan oven.
Wait to let the sweet potato chunks cool.
Meanwhile, combine dressing ingredients in a separate bowl/cup/jar. (Tip: I like to use a jar so that I shake it up!)
Then, in your salad bowl, add all the remaining ingredients (rocket, watermelon, raisins and sweet potato), pour dressing over and toss.