Step 1: 1) cook the pasta as per the instructions.
Step 2: 2) once the pasta’s cooked, drain it. No need to drain thoroughly as a bit of moisture makes it quite nice.
Step 3: 3) put the pasta back in the saucepan, as well as the marmite and butter.
Step 4: 4) stir over the heat for a few seconds, or until the marmite and butter have combined and are mixed thoroughly with the pasta.
Step 5: 5) serve in a bowl or small plate.