Cut the pumpkin into large cubes.
Chop the onion into small cubes no larger than 1 cm.
Cut the carrots into small cubes no more than 1 cm.
Cut the potatoes into large cubes.
Cut the bell pepper into large cubes as well.
Grease a baking dish with vegetable oil and put the vegetables in. Mix them and season with pepper and salt.
Cover the vegetables with foil and bake in the oven for 30-40 minutes at 180⁰C.
Then remove the foil and bake the vegetables without it for 10 minutes.
Sprinkle the prepared vegetables with finely chopped green onions.