Heat oven to 200 C / 180 fan / 400 F /gas mark 6 and line a large baking
sheet with parchment paper or a silicon baking mat; set aside.
Wash and half the pumpkin, remove seeds, then cut it into 1 inch cubes.
Spread onto the lined baking sheet.
Slice the top of the garlic head and place it cut side up between the
pumpkin.
Add the quartered onion and toss in olive oil and thyme. Season with salt
and pepper.
Place in the preheated oven and roast for 45 minutes.
In the meantime, mix olive oil, maple syrup, Cayenne pepper and thyme in
a medium bowl, add walnuts and mix well to coat.
Spread walnuts on a separate lined baking sheet and toast in the oven
together with the pumpkin for the remaining 10 to 12 minutes.
Meanwhile, cook your pasta according to cooking instructions. When it is al
dente, drain, saving 1-2 cups of pasta water.
Take the walnuts out of the oven and toss in more thyme. Season with salt
and let them cool completely.
Now take out the pumpkin and place in a blender. Squeeze the individual
garlic cloves out of their husk and add to the blender, together with
mascarpone, sun dried tomatoes and 1 cup of pasta water. Use more if
needed.
Blend until creamy, using a spatula to push down the sides of the blender.
In a small skillet, heat the oil to cover the bottom. Add basil leaves , a couple
at the time and fry for up to 5 seconds, before carefully lifting out of the oil
and placing on a paper towel to drain excess oil.
Mix the pasta and sauce in a large saucepan and heat through.
Serve with freshly grated parmesan, herby walnut andcrispy basil on top.