Grate peeled kohlrabi with a grater or using the grating blade on food processor
Place grated kohlrabi in cotton dish towel lined colander in the sink
Grate carrots and onion and place in mixing bowl
Add cassava flour, salt, pepper, cumin and parsley.
Gather towel with kohlrabi in it into a tight bundle and squeeze out excess water. Add kohlrabi to mixing bowl, stir to combine. Let mixture rest for 10 minutes so cassava flour can soak up moisture.
Heat cast iron pan or heavy bottomed saute pan over medium heat. Gather about 2 tablespoons mixture in hands and gently squeeze together to combine, roll into balls.
Spray preheated pan with oil. Place a few balls of mixture in pan and press down gently with hand or spatula to form pancake shape. Do not overcrowd the pan.
Cook 2-3 minutes on each side until they are browned and crispy. Set cooked pancakes on clean serving dish or oven proof pan.
Continue cooking remaining pancakes in the same way adding more cooking spray as needed.
Serve pancakes right away for crispier texture or reheat in 375 degree oven on parchment lined sheet pan until hot and crispy.