Turn your oven grill on 200 degrees to allow it to heat up while the frittata is prepared. If your grill is part of the oven, move the oven tray up closer to the grill.
Break 6 large eggs into a bowl, add 4 tablespoon water, pinch of salt, black pepper, cumin, nutritional yeast, and whisk all ingredients together. Set aside!
Bring a medium size fry pan to medium heat. Add butter or olive oil and wait until the oil is hot.
Add onions, capsicums, and sliced mushrooms. Cook stirring until onions are translucent.
Spread steamed broccoli, asparagus, grated squash, cherry tomatoes around the bottom of the frypan.
Pour the whisked egg mixture over the vegetables. Hold the handle and give a little shake to the fry pan so the egg mixture spreads evenly.
Cook on medium heat for 3-5 minutes. Don't stir.
Sprinkle Parmesan cheese over the top and put in the oven to cook the top half of the frittata. 3-5 minutes under the grill
Remove out of the oven, add herbs of choice and serve hot. Suggestion: serve with a salad or a slice of wholemeal bread.