Step 1

Put the cut up squash into a roasting tin, slick with olive oil & a sprinkle of salt & pop into a moderate (200C/Gas Mark 7 )  oven. Roast for around 20 mins until slightly caramalized on the edges

Step 2

In a mortar & pestle bash the garlic, spices,  & chilli into a paste...

Step 3

Then, heat the oil in a heavy saucepan over a medium heat, add the onion, and cook until the onion is softened.

Step 4

Add the tomato paste plus the paste of garlic, spices & chilli  & add it into the pan, cooking it for few minutes.

Step 5

Then, stir in the tin of tomatoes and squish them up a bit with the spoon, then add the, carlin peas  and a pinch of salt. Bring this all to a bit of a simmer and let it thicken. This might take 15- 20 mins...

Step 6

Stir in the garam masala, and the lemon juice, plus taste for salt & add a little if needed...