Wash the potatoes and rub dry. Wash and clean the peppers and tomatoes and cut into large cubes. Wash fresh thyme and rosemary and pat dry.
Now put the potatoes in a tin with a lid (e.g. Ultra from Tupper). On top of the diced pepper and tomato. Then the grains and sprigs of rosemary-thyme. Spread 1 - 2 tablespoons of olive oil over the vegetables and mix everything together.
Put the lid on and bake in the preheated oven at 230 ° C for about 45 minutes. A dip goes well with it or you can simply take it as an accompaniment to meat.