Put onion, leek and garlic into the Thermomix bowl and chop with the measuring cup (MC) on for 4 seconds | Speed 6
Scrape down the sides of bowl, add butter and cook with the MC off for 4 minutes | Varoma | Speed 2
Add 250g of the mushrooms into the Thermomix bowl and chop for 15 seconds | Speed 3
Scrape down the sides of the bowl, add water, stock, salt and pepper and close the lid
Arrange drumsticks in the Varoma bowl and tray, sprinkle with salt and pepper, assemble and sit on top of the Thermomix
Cook for 15 minutes | Varoma | Speed 1
Remove the Varoma, put the MC on and blend for 30 seconds going slowly from Speed 1 to Speed 9
Add sliced mushrooms to the Thermomix, stir quickly with the spatula and put carrots and beans into the Varoma bowl
Put the lid on the Thermomix and reassemble the Varoma on the Thermomix
Cook for another 15-20 minutes | Varoma | Speed soft (or until the chicken juices run clear)
Remove the Varoma, put the Thermomix basket on top of the closed lid and cook for 5-10 minutes | Varoma | Reverse | Speed 2 to reduce the sauce