- Separate the fennel into spoon-shaped halves. - Fennel. 
- Cut the leeks and bell peppers into very thin strips. - leeks., Bell peppers. 
- Grate the mozzarella. (You can also buy already grated). - Mozzarella cheese. 
- In a frying pan, sauté the leeks in olive oil for a couple of minutes until golden brown. - Olive oil. 
- Add the minced meat and season. - Mince., Salt., Pepper. 
- When the meat is half cooked add the bell peppers and cook for a couple of minutes. 
- Let cool in a strainer and reserve the liquid that we collected. 
- To this liquid add a teaspoon of corn flour and mix well to thicken the liquid. - Cornflour. 
- Add the thickened liquid to the meat and mix. 
- Let the preparation cool. 
- Once the preparation is cold, add a good amount of mozzarella cheese and mix well. 
- Fill the fennels with the preparation. 
- Cover the fennels with a good amount of finely grated Manchego cheese. 
- Bake for approximately half an hour at 180°c. Until the fennels are well cooked and soft. 
- Enjoy!