Dice the carrots, green beans, and celery.

Wash the diced vegetables and place them in a pan.

Add a small amount of water and salt to the vegetables.

Boil the vegetables until they are cooked through.

Transfer the cooked vegetables into an oven-proof dish.

Pour enough of the vegetable cooking liquid into the dish to just cover the bottom.

Slice the boiled potatoes.

Arrange the potato slices over the top of the vegetables.

Cover the potato layer completely with grated Gouda cheese.

Preheat the oven to 200 degrees C/390 degrees F.

Place the dish in the preheated oven and bake for 20 minutes, or until the cheese is melted and golden brown.

Alternatively, place the dish under a preheated grill until the cheese is melted and golden brown.