Preheat oven to 400F and set aside a small baking sheet.

Add cubed sweet potato, sliced red onion, garlic and oil to the baking sheet and mix with your hands until everything is incorporated. Slide the sheet into the preheated oven and roast for 20 minutes, or until sweet potatoes are very tender. Remove from the oven and allow to cool for a couple of minutes.

Add coconut milk, water, lemon juice, curry powder, salt and roasted vegetables to the jug of your high powered blender. Blend mixture on high for 2 minutes, until smooth.

Pour mixture into a bowl and stir in fresh herbs. Allow to cool completely and add to any greens salad as a salad dressing, steamed vegetables as a sauce, or fried veggies and meat for a quick curry!