Clean, wash and cut the zucchini lengthwise into 12 thin slices. Blanch them in a little salted water, remove them and let them drain on kitchen paper. Peel onion and garlic and chop finely.
Heat 1 tablespoon of oil in a frying pan. Fry the minced meat until crumbly. Add half of the onion and garlic. Stir in tomato paste. Drain the corn and stir in too. Wash the rosemary, remove the needles and chop, except for something to garnish.
Season the mince with salt, pepper and rosemary. Crumble the cheese and fold in, let it cool down a little. Heat 1 tablespoon of oil in a saucepan. Fry the remaining onion and garlic in it. Dust with flour.
Stir in tomatoes and stock, bring to the boil. Season to taste with salt and pepper. Spread the chopping mass on the zucchini slices, roll them up and fix them with wooden skewers. Heat 2 tablespoons of oil in a pan.
Fry the rolls in it for about 4 minutes. Arrange the rolls with some sauce on plates. Garnish with rosemary. Add the rest of the sauce. Baguette tastes good with it.