First peel and dice the potatoes and sweet potatoes. Then clean the pepper and cut into pieces. Peel and dice the onion.
Heat the olive oil in a pan and fry the potato pieces in it. Season with a little salt, pepper and shashlik spice. Remove the potatoes after frying. Fry the sweet potato cubes and the pepper pieces in the same fat. Season these with a little salt and pepper.
Then mix the potatoes with the sweet potatoes and pieces of pepper in a prepared baking dish. Pour the mascarpone over it and distribute it evenly.
Place the vegetable mixture in the oven at 150 ° C top / bottom heat for about 15 minutes.
Goes well as an accompaniment to pan-fried foods or as a vegetarian main course.