Friend of Julie: Egg and Veggie Casserole

This recipe comes from contributor Jennifer. She brought this to the potluck yesterday and as soon as I took a bite I realized I needed to take a photo. This recipe is easy to make and ingredients can be adapted to suit your taste and what's in your kitchen.
Ingredients

• 1/2 cup red onion, chopped
• 12 large eggs
• 16 oz cottage cheese
• 8 oz Swiss cheese, shredded
• 8 oz cheddar cheese, shredded
• 1 tbsp olive oil
• 3 large white mushrooms, sliced
• 1 cup spinach, chopped

I cut up at least 2 ham steaks (bite size pieces) or you could use cooked sausage, bacon, turkey, chicken, etc. I also omit the spinach, and add corn and more mushrooms; you can add peppers, etc.
Make it your own!

Directions
Preheat oven to 350 °F.

Spray 9 x 13" pan with olive oil.

1. Cook onion in olive oil until caramelized. Put aside.
2. Add eggs to a large mixing bowl. Scramble eggs.
3. Add cottage cheese, Swiss, cheddar, mushrooms, spinach and cooked onions.  Stir all ingredients together until well mixed.
4. Pour egg mixture into prepared pan. Bake for 35 minutes.
5. Serve warm.

Note: can be refrigerated and reheated.