Butternut Squash without spareribs sauce

1 1/4 kg butternut squash or 1 1/4 kg kabocha squash or 1 1/4 kg pumpkin sunflower oil 20 g butter (the original recipe calls for 40) 1 medium onion , chopped[...]

2 tablespoons sunflower oil 1 onion , sliced 1 butternut squash, diced 4 tomatoes , chopped 1 teaspoon cumin seed 1 teaspoon paprika 2 tablespoons hot curry[...]