From UK Thermomix http://www.ukthermomix.com/recshow.php?rec_id=24
A very easy recipe. If you have a baby, puree a portion at speed 6, or lower speeds if you wish a lumpier meal for an older baby. Then everyone in the family can eat the same meal!
A Healthy Eating Recipe
1 medium head of cauliflower
1 head of broccoli
180 gm Gruyère cheese
50 gm Parmesan piece
1 slice bread
60 gm butter
Place bread, gruyère and parmesan into the Thermomix bowl. Grate and crumb 30 seconds, Speed Turbo. Add butter. Turbo pulse briefly a few times until the mixture looks like crumbs. Tip out and set aside.
Cut the broccoli and cauliflower into florets and place broccoli first, then cauliflower into the Varoma steamer dish (without the tray). Rinse vegetables and cover.
Add 600 gm water to the Thermomix bowl. Place Varoma onto the lid of the bowl. Steam vegetables 15 minutes, 100˚C, speed 4 until al dente texture.
Place vegetables into a gratin dish, cover with cheesy crumbs. Bake in the Aga Roasting Oven (or conventional oven at 200˚C or gas 6) for 10 to 15 minutes until topping is sizzling and golden.
If your family prefers a gentler cheese flavour, use edam instead of gruyere and parmesan.