In a large mixing bowl, crack the 12 eggs. Using a whisk, fork, or hand mixer, mix until light and fluffy.
Add in the 2 cups of broccoli, 1 diced onion, salt and pepper, and crumble ¾ of the log of goat cheese into the mixture. Mix all these ingredients together.
Pour into your prepared 9x13 baking dish.
Bake in the oven at 350 degrees for 40-60 minutes.
Remove when the center of the egg bake is firm and does not jiggle.
Let rest for 5 minutes, slice and serve.
If using for meal prep let cool, slice, and put in airtight meal prep containers for the next 5 days.