Place roughly chopped zucchini into the Thermomix bowl. Grate for 5 seconds, Speed 5.
Place grated zucchini into a strainer and add the salt. Stir then leave for 10 minutes. Squeeze out all of the excess liquid well.
Roughly chop the carrot and place into the Thermomix bowl. Grate for 6 seconds, Speed 6.
Add the strained zucchini, corn kernels, eggs, garlic, plain flour, parsley, spring onions and season with salt and pepper.
Mix for 10 seconds on Reverse, Speed 5. Scrape down the sides of the bowl and repeat for a further 5 seconds or until completely combined. Heat 2 tbs of oil in a frying pan over medium heat. Place heaped tablespoons of the mixture into the pan.
Flatten the mixture with a spatula and cook for 2 minutes on either side or until golden and crispy on the outside and cooked through (note: they'll still be soft on the inside).
Repeat with remaining mixture.