Preheat the oven to 180° Fan or 200° Conventional.
Making the béchamel – In a saucepan melt the Butter.Once the butter is foamy stir in the Flour to make a roux. Cook the flour out about 2 mins.Whisk in the Milk slowly, making sure it is smooth. The warm milk helps it incorporate better.
Add a sprinkle of Cheese; I’d say a child’s handful. You’re looking for the suggestion of Cheese rather than strong Cheese Sauce. You can do this set without the hob on the heat from the sauce will melt the Cheese easily.
Let’s build in an oven safe dish put a layer of Ragu.On top of this goes sheets of Lasagne Pasta, I fill in gaps by breaking up a sheet and making a Lasagne jigsaw.Next spread the Béchamel on top of the Pasta.
Repeat these layers to create your lasagne, how many layers you have will be dictated by not only your own wishes but also the size and depth of the dish you are using. One I use gives me two layers of each so ragu, pasta, sauce, ragu, pasta, sauce. This is a good amount but if your hungry push for more layers.
On top you have finished by spreading béchamel on pasta, then cover with grated cheese.
Put the dish on a baking tray, in case of over spill, and bake in the oven for 45 mins until the top is crisp and the ragu is bubbling.
Notes
LEFTOVERS TIP
The best thing to do with lasagne leftovers is to either put in the fridge for the next day or freeze for another time. You could chop up the pasta into smaller pieces and create a pasta bake topped with breadcrumbs and cheese.