Preheat the oven to 400F and grease a 9x13 baking dish with spray avocado oil

Dice the bell pepper and yellow onion

Add avocado oil to a frying pan and heat over medium heat

Add the peppers and onions to the pan and saute over medium heat until soft and fragrant - about 5 minutes

Season the peppers and onions with salt and pepper and add the frozen hashbrowns to the frying pan

Cook the mixture for 3 minutes tossing frequently

Pour hashbrowns, peppers and onions into the greased 9x13 baking dish

Scramble 10 eggs in a bowl and pour over the hashbrowns, onions and peppers and stir gently

Place baking dish in the oven and cook at 400F for 30 minutes

Remove the casserole dish from the oven and allow to cool slightly

Slice the casserole into 12 even squares and enjoy!