To make the cheese sauce, put cheese into the Thermomix bowl and grate with the measuring cup (MC) on for 8 seconds | Speed 8; remove to a bowl
Put onion into the Thermomix bowl and chop with the MC on for 3 seconds | Speed 5
Add beans, 5cm cauliflower florets and milk (440g), and cook with the MC off for 20 minutes | 100C | Speed soft
While the sauce cooks, heat water in a large saucepan and cook pasta according to packet instructions; adding the 2cm cauliflower florets into the saucepan with 3 minutes to go in the cooking time and covering with a lid
Drain pasta and cauliflower but do not rinse with cold water; add back to the saucepan
Once the sauce stops cooking, put the MC on the Thermomix and blend for 1 minute – going slowly from speed 1 to speed 8 – to create a smooth sauce
Add grated cheese, mustard (2tsp), salt and pepper and cook for 2 minutes | 90C | Speed 4
To serve, combine sauce with the pasta and cauliflower in the saucepan
