Step 1

To prepare lasagne alla   Bolognese , start with the meat sauce. Prepare the vegetable broth and ensure to keep it warm. Then take the pancetta bacon, cut it into strips first 1 and then chop it well 2 . Separately, finely chop the carrots, onions, celery and set aside 3 .

Step 2

In a saucepan, pour a drizzle of oil and the pancetta bacon. Use a ladle to spread it well 4 and let it brown for a few minutes. Then add the chopped vegetables 5 and cook for 5-6 minutes 5 . Then add the minced meat 6 . Stir and raise the heat. Let the meat brown slowly, it must be well browned to seal the juices and be soft.

Step 3

Deglaze with red wine 7 and let it evaporate completely before adding the tomato puree 8 . The Bolognese sauce must cook for two hours. When it starts boiling again, you can add some hot broth, one or two ladles 9 , and let the sauce cook for another couple of hours at least.

Step 4

Let it cook with the lid on, without covering the pan completely 10 . Check and stir from time to time, add more broth when needed and let it cook. Now move on to the pasta. First, pour the spinach into a pan 11 , add a little water, cover with a lid 12

Step 5

and cook until they are wilted, it will take 5-6 minutes in total 13 . At this point, drain them, let them cool and squeeze them well 14 . Transfer the spinach to a mixer 15

Step 6

and blend them until you get a puree 16 . You will need to get approx 3.5 cups (100 g) of it. Now on a pastry board pour the semolina and 00 flour 17 , add the spinach and create a fountain shape. Add the lightly beaten eggs 18

Step 7

and egg yolks 19 . Begin to knead everything starting from the center 20 , this way the eggs will not slip out of the fountain. Knead well until you get a homogeneous dough 21 .

Step 8

Wrap it in plastic wrap 22 and let it rest for 30 minutes at room temperature. In the meantime, prepare the béchamel sauce. Heat the milk in a saucepan 23 , without boiling it. In another pan, place the butter 24 and let it melt.

Step 9

Add the flour in one go 25 and cook for a few minutes until you get a golden roux 26 . Then, pour the hot milk in three times 27 , mixing well.

Step 10

Add salt and flavor with nutmeg 28 . Continue to mix until you get a creamy béchamel 29 . Transfer to a small bowl, cover with plastic wrap and set aside. As soon as 30 minutes have elapsed, take the dough back and take a piece 30 . Cover the rest of the dough with plastic wrap to keep it from drying out.

Step 11

With the help of a little semolina flatten it slightly on the pastry board to form a rectangle and roll out the dough in the machine 31 . Start from a wider thickness, then fold the dough and pass it over. When you feel it is too wet, sprinkle with a little semolina. Gradually reduce the thickness until you get a sheet just over 0.2 inches (0.5 mm) thick. Transfer it to a pastry board and cut into large rectangles 12x8 inches (30x20 cm) 32 . Continue this way until the dough is finished and in the meantime put a pot of water on the stove and add salt. When it starts to boil, immerse one sheet at a time 33 ,

Step 12

wait 30-40 seconds and using a skimmer drain it 34 . Transfer it to a tray with a cloth 35 and dab to remove excess water. Continue this way, placing the cooked sheets side by side, without overlapping them. As soon as the Bolognese sauce is ready 36 , season with salt and pepper and proceed to the composition of the lasagna.

Step 13

Take a large 12x8 inches (30x20 cm) lasagna pan and grease the bottom 37 . Add a thin layer of béchamel and one of Bolognese sauce 38 . Then place the first sheet 39 ,

Step 14

add a layer of béchamel and a layer of meat sauce 40 . Add grated Parmesan cheese 41 and place another sheet of pasta on top 42 .

Step 15

Add another layer of béchamel and one of meat sauce 43 , add grated cheese 44 and continue like this until you have 5 layers. After placing the last sheet, add the Bolognese sauce 5

Step 16

in order to completely cover the pasta sheet 46 . Sprinkle with grated cheese, add some tufts of butter 47 and bake in a preheated static oven at 338°F (170°C) for 40 minutes 48 .