Spinach Mushroom Kugel

From Jamie Geller, Aug 17, 2011
https://www.joyofkosher.com/recipes/spinach-mushroom-kugel/

INGREDIENTS
1 - 1lb pkg frozen spinach, thawed and squeezed dry
1- 8oz sliced mushrooms (canned is okay - be sure to drain)
2 eggs, separated, whites whipped
1/2c. mayonnaise
2T onion soup mix (see below for Homemade Healthy Onion Soup Mix)

PREPARATION
1. Preheat oven to 350°f.
2. Place all ingredients in a large bowl and mix until well combined.
3. Pour into a 9" round baking dish and bake for 45-50 min.

Note: recipe can be doubled and cooked in a 13 x 9 x 2" Pyrex

HOMEMADE HEALTHY ONION SOUP MIX (makes ~3 T)
1 t. turmeric
1 T sugar
1/2 t celery seed
2 T + 2 t dried minced onion
1/4 t ground black pepper

Combine all ingredients and store in an airtight container until ready to use. Should keep up to 1 yr.