How to make
Boil the potatoes with the peel in salted water, until they're fully cooked. Peel and chop them into large pieces into a large bowl. The sausage is cut into slices.
The mushrooms are cleaned and washed and are cut into juliennes. The broccoli is left in warm water to defrost, strained from the excess water and cut into smaller pieces.
All of the products are added to the bowl with the potatoes, they are seasoned with the spices and poured with the cream, add 3.5 oz (100 g) of grated mozzarella and 3.5 oz (100 g) of grated yellow cheese and sprinkle with finely chopped dill.
Mix well and distribute it in suitable baking dishes, I used 4 rectangular ones, put them in a heated oven at 390°F (200°C) for 10 minutes.
Take them out and sprinkle generously with the remaining grated yellow cheese and mozzarella.
Place them back into the oven, until they're fully cooked.
The gratin is served with garlic and yogurt sauce or an yogurt salad - it's up to you.
The potatoes au gratin with mozzarella is ready.