Aftereights - sweat onion, garlic, chilli, ginger in some oil and butter til soft. Add garam masala and turmeric and fry til spices are fragrant (add a little oil if you need). Add a cup of veggie stock, tin of tomatoes, and a bag of frozen spinach. Coconut milk or natural yoghurt if you fancy (you could serve with yoghurt on the side). Add chickpeas - either dried (soaked and cooked) or tinned. Or instead of chickpeas, paneer. If no cheese, it will need plenty of salt.
Sorry for lack of quantities, I do it by eye. I think a big pot is roughly 2 onions, 5 cloves garlic, a thumb of fresh ginger, a chilli or two, depending on heat, dessert spoon garam masala, same of turmeric, one bag of frozen spinach (1kg), chickpeas/cheeze/seasoning to taste.
frozen spinach is such good value and soooo nice in curries.
4thelove I love a Nigel Slater sweet potato and chickpea curry - the spice mix is ginger, chilli, lemongrass, fresh coriander - can't find the original recipe (damn) - was in the Guardian, but here it is in a blog