Preheat the oven to 200°C (fan).
Peel the pumpkin and cut into big cubes.
Place them on a lined baking sheet and let them cook in the oven until lightly soft for about 15 minutes.
Take the pumpkin out of the oven when soft enough, let it cool down a little bit and place it in a blender.
Add all the other ingredients and blend until well combined *. The mixture must be soft, but not too runny **.
Fill in a large saucepan with water and bring it to a boil.
Roll small balls and flatten the balls a little bit with your finger down. Take a fork to make indents on one sight. Pssst : the batter is quite soft and sticky. It is much easier if you always take a little bit of buckwheat flour -or any other flour- in your hands and roll them (with your hands) first. If you find it easier to make balls or squares then go ahead - the size and form don’t matter.
Put the gnocchi into boiling water. They will be ready when they start floating on the top. Take a sieve spoon to take them out.
We try always to prepare a batch of 20 gnocchis at the same time and then continue to roll them.
Preheat a pan with 1 Tbsp of olive oil.
Eventually, saute the gnocchi with some spinach leaves, dried tomatoes and 2 tbsp of pesto for about 3 minutes and serve immediately.