Start by heating the butter in a pan and then adding the spinach once it’s melted and cook till the spinach is wilted and the water has dried up. Alternatively just wilt the spinach and then squeeze on the water and set it aside.
In a large mixing bowl crack the eggs, season with salt pepper, add the heavy cream and then go all MJ on it and BEAT IT! Once it’s nice and frothy add in the shredded mozzarella cheese and mix well.
Grease a pie dish/oven safe dish and pour in the egg mixture. Then randomly place the spinach in different spots and crumble over the feta cheese.
Bake at 200C/400F in a PRE HEATED oven for 15-20 minutes or the eggs are fully cooked through.