Preheat oven to 200°C and line 2 trays with baking paper.
Peel and chop all vegetables into approx 2 cm pieces. Separate chopped veggies into bowls based on how you want to season them. EG: I keep broccoli and cauliflower separate from the others.
To your bowl of sweet potato, potato, carrot and pumpkin, add a generous drizzle of olive oil and a sprinkle of smoked paprika, oregano and garlic powder to taste, or any other spices you prefer. To the cauliflower add olive oil, turmeric and salt, and to the broccoli add olive oil, garlic powder and chilli flakes.
Arrange vegetables on the trays keeping the broccoli and cauliflower on one tray and the remaining veggies on the other, ensuring they are evenly spread out. Bake for 30 minutes turning once while cooking. At this stage the broccoli and cauliflower will be done, but if you want your potatoes and sweet potatoes to be a little extra crispy, leave them in for about another 10 minutes.
While your veggies are baking, make the green goddess sauce. Add all of the sauce ingredients to a food processor and blitz for a 2-3 minutes until creamy. Scrape down sides as necessary. Adjust salt and lemon juice to taste.
Once veggies are cooked, separate them into 4 containers for meal prep, storing the sauce separately, or enjoy straight away with a generous dollop of your green goddess sauce.