Preheat the oven to 180°C/350F.
Slice the pumpkin into 3 inch pieces and remove the ends of the carrots and spread evenly over the baking tray. Pour the olive oil and sprinkle the salt over and place in the oven to bake.
After 45 minutes, remove from the oven and flip over, adding the cloves of garlic to the tray.
Return to the oven and bake for 1 further hour or until the vegetables are soft when pierced.
Remove from the oven and place in a heatproof blender or large pot along with the hot water, vinegar and curry powder.
Blend until smooth, pulse if necessary.
Clean your blender and place the carrot top greens, peeled roasted garlic cloves and olive oil therein.
Blend until smooth, pulsing if necessary and clearing the blades to create an even smooth consistency.
Spoon into your serving bowl and set aside.
Heat your soup until hot and ladle into serving bowls with a tablespoon of the pesto stirred through and some pumpkin seeds to serve.
Serve immediately.