Boil cauliflower for 7-10 minutes until soft. Remove from stove and drain. transfer to cutting board to roughly chop. (I use about 3/4 of the cauliflower but you can use more.)
Add oil to a saute pan and heat over medium-high. Add carrots, parsnips and cook until soft for 7 minutes and add garlic, leeks. Cook another 4 minutes until leeks soften. Remove from heat.
In a pot, melt butter and whisk in the flour. Heat until it starts to brown a bit over medium-high heat. slowly add milk, whisking all the time, and then add water. Add salt, cayenne, and cheese and stir until cheese melts. Remove from heat and add eggs and stir until it forms a smooth batter.
Add the cauliflower and other veggies to cheese sauce and mix gently.
Pour ingredients into a baking dish and bake at 300 degrees F˚ for approx 1 hour and 15. ( I cover the dish for 20 minutes and then remove the lid)
Servings 0