Clean and wash the cabbage and remove the 16 large leaves (use the rest of the cabbage for other purposes). Cook in boiling salted water for about 2 minutes. Drain, cut midribs flat
Peel the onion. Finely chop the onion and the cheese. Knead minced meat, breadcrumbs, egg, cheese and half onion, season. Lay 2 leaves overlapping on top of each other. Spread the minced meat on top. Wrap the edges, roll up and tie up
Fry the rest of the onion in hot oil. Brown the roulades all around, remove. Sauté tomato paste. Stir in about 1/2 l water and stock, bring to the boil. Cover the roulades and stew them for about 45 minutes.
Take out the roulades. Mix starch and cream. Bind the stock with it, season to taste. Arrange everything. Add mashed potatoes.
Prepare double the amount at once. You can freeze the finished roulades for up to 3 months