Cook pasta in salted water according to directions on the package - they have to be al dente. Drain the water.
Chop onion and garlic and fry in olive oil on a pan on medium heat for a few minutes.
Add spinach and let it wilt.
Mix the vegetable stock cube with a dl of boiling water.
Melt butter in a pot and whip in the flour. Let it fry for a few minutes to remove the taste of flour.
Remove the pot from the heat and add the stock water while whisking until it thickens.
Put the pot back on the heat and add the pea drink a little at a time. Makes sure it boils for a minut or two - keep whisking. It needs to be a creamy and slightly thick sauce.
Add a handfull of the grated cheese. Taste with fresh herbs, pepper, salt, a bit on finely grated nutmeg and mustard.
Add the pasta and spinach mixture to an oven proof dish. Pour over the sauce and top with the rest of the cheese and panco.
Bake your mac and cheese at 215 degrees celcius of about 15 minutes until crisp and golden on top.