Green beans, brussels sprouts, sweet potatoes, cauliflower, or broccoli take about the same amount of time to roast as carrots. Therefore, they would all be great additions. Make sure to cut the brussels sprouts and sweet potatoes to about the same size as the carrots to ensure they cook through. You may need to double the rest of the ingredients to make sure all the vegetables are coated evenly in the brown sugar, dill, and olive oil paste.