Fry the bulgur in 1 tablespoon of hot oil. Stir in 3/8 l water and stock, bring to the boil. Cover and cook for about 8 minutes, stirring frequently.
Clean, wash and chop the tomatoes and spring onions. Add tomatoes and 2/3 spring onions to the bulgur and cook for 3 minutes
Wash fresh oregano. Fry the rest of the spring onions in 1 tablespoon of hot oil. Add chunky tomatoes and oregano, bring to the boil. Season to taste with salt, pepper and a little sugar
Wash the aubergines and halve them lengthwise, hollow out a little. Dice the inside and add to the bulgur. Pour into the aubergines
Pour the tomato sauce into a large, greased casserole dish and place the aubergines on top. Coarsely grate the Gouda and sprinkle over it. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/gas: level 3) for 35-40 minutes