1. 1

   Step 1

   Preheat the oven to 200 °C top/bottom heat.

2. 2

   Step 2

   Finely puree the canned tomatoes in a tall container using an immersion blender.

3. 3

   Step 3

   Finely dice the onion and lightly crush the garlic cloves.

4. 4

   Step 4

   Briefly sauté the onions and garlic in 2 tbsp of olive oil in a pot until translucent.

5. 5

   Step 5

   Deglaze with the pureed tomatoes and bring to a boil.

6. 6

   Step 6

   Add the water, salt, sugar, and basil sprigs to the sauce.

7. 7

   Step 7

   Let the tomato sauce simmer over medium heat.

8. 8

   Step 8

   Meanwhile, heat 1 tbsp of olive oil and butter in a pan.

9. 9

   Step 9

   Sauté the gnocchi until golden brown and lightly salt them.

10. 10

    Step 10

    Place the gnocchi in a baking dish.

11. 11

    Step 11

    Cut the mozzarella into 1 cm cubes and finely grate the parmesan.

12. 12

    Step 12

    Pour the tomato sauce over the gnocchi in the dish.

13. 13

    Step 13

    Sprinkle with the mozzarella cubes and parmesan.

14. 14

    Step 14

    Bake the casserole in the oven until golden brown.

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