Cooking Spray and heat a large 13" x 9" casserole dish to 375F. Heat avocado oil in a large skillet on medium-high. Sauté chopped onion for 5–8 minutes, stirring occasionally, until softened.
Step 1
INSTRUCTIONS
Cover the skillet with baby spinach and garlic for 2 minutes to wilt. Mix sea salt and sun-dried tomatoes. Leave heat. Evenly distribute chicken and vegetables in casserole.
Step 2
Combine eggs and egg whites in a large bowl. I salt eggs to taste. Egg mixture should evenly coat chicken and veggies.
Step 3
Mix well to distribute feta cheese in casserole. Scatter grated cheese on the casserole.
Step 4
The casserole should be golden brown and clean after 35–45 minutes on the centre rack of the preheated oven.
Step 5
Place a meat thermometer in the egg casserole's centre to check doneness. A 190-degree internal temperature indicates doneness.
Step 6
This bakes in 35 minutes for me. Let the casserole cool for 10 minutes before slicing and serving.
Step 7
To complete a meal, serve the slices with sour cream, plain Greek yoghurt, guacamole, fresh fruit, toasted bread, or a green salad.