Add the oil and chopped onion to a sauce pan and let it brown
add the tomato sauce, a glass of water, the lentils, salt, pepper, herbs and spices to your own taste
let it simmer for 30 to 45 minutes and a little water if the sauce consumes too quickly in the meantime
in the meantime cook the paccheri (or the gluten free past of your choice) for half the cooking time indicated on the package, you want the pasta to be very “al dente”
drain the pasta, season with a little olive oil, mix and set aside
make the gluten free vegan bechamel (find the recipe linked up in the post)
pre-heat your oven at 180°C / 350 F
cover the bottom of a baking pan (I used an 8 inch round one) with the ragu
add the paccheri, “standing” one next to the other (or simply add the pasta of your choice)
cover everything with the remaining of the ragu
add all the bechamel on top and a sprinkle of chopped basil
bake for 30 minutes or until the top of your pasta pie is nice and brown