Once the butter is completely liquid, add in the flour and whisk.
Reduce the heat to low and add nutritional yeast, whisk again until clumpy.
Add the water and whisk on low heat for a few minutes. If it gets too thick you can add a little bit more water and whisk again.
Instructions for the Mac & Cheese
In a large pot, heat some water and boil the macaroni noodles according to the instructions on the package.
Preheat the oven to 200°C or 480°F.
Mix the panko flakes with the spices for the breadcrumbs layer.
When the noodles are cooked, drain them and pour over the vegan Cheese Sauce. Transfer it to a lightly oiled oven-save dish and sprinkle with the breadcrumbs. Spray the top with oil.
Bake the mac and cheese in the oven for about 10 minutes, until the top is nice and brown. Enjoy!
Notes
My oven dish has the dimensions: 10" x 18" (25cm x 17cm)