-
1
First, blanch the lasagna noodles for a couple of minutes in a pot of salted boiling water.
-
2
Then drain them (keeping some hot water for the pesto sauce) and dry the pasta sheets on a cloth.
-
3
Put all the ingredients for the pesto sauce in a blender and blend until you have a smooth sauce.
-
4
If the sauce is too thick add some more water.
-
5
The final result has to be rather fluid because the lasagna will need some moisture for the baking.
-
6
For the bechamel sauce: Heat the milk in a pot over medium low heat.
-
7
In a saucepan melt the butter over medium heat then whisk in the flour.
-
8
When the butter and the flour are well mixed, start to pour in little by little the hot milk whisking all the time.
-
9
You should obtain a thin sauce without lumps.
-
10
Now, if you have a microwave, transfer the sauce into a microwave safe bowl and put it in the microwave at maximum power for 2 minutes.
-
11
Then take it out, whisk it and put it back in the microwave for another 2 minutes.
-
12
Whisk again and if the sauce is too thin repeat the process one last time.
-
13
If you do not have a microwave, put the saucepan back on the stove at low/medium heat and bring the sauce to boil whisking all the time.
-
14
When the sauce has thickened, take it from the stove.
-
15
Finally, season the bechamel sauce with salt and ground nutmeg, and let it cool.
-
16
Peel the boiled potatoes and cut them into slices of around 1 cm thickness.
-
17
Mix the pesto sauce with 2/3 of the bechamel sauce (set the other 1/3 of the bechamel sauce aside).
-
18
Taste and add more salt if necessary.
-
19
You will use the rest of the bechamel sauce for the topping.
-
20
Preheat the oven at 200 degrees C.
-
21
Grease a baking dish (35x25x7 cm or similar) with 2-3 tablespoons of butter.
-
22
Put down a first layer of pesto sauce, followed by one layer of lasagna noodles and finally one layer of boiled vegetables (French beans and potatoes).
-
23
Repeat these layers until you finish your ingredients, the last layer has to be a layer of lasagna noodles.
-
24
Top the lasagna with the reserved bechamel sauce that you previously put aside.
-
25
Lastly garnish with some butter chunks and sprinkle with grated Parmigiano cheese.
-
26
Put the lasagna in the oven on the middle rack and bake it for 40 minutes.
-
27
The lasagna is ready when the top is a nice golden crust.
-
28
Serve it hot.
-
29
You can prepare the lasagna the day before and bake it only at the last moment.