from the cookbook : A Taste of Pesach V” page 24
2 lbs mushrooms peeled and sliced
2 large purple onions
3 TBSP oil
3 eggs
1/2 cup mayonnaise
2 Tbsp potato starch
2 Tbsp onion soup mix
garlic powder to taste, about 1/4 tbs
pepper to taste
preheat oven to 350 degrees
heat oil in a skillet and saute onions till soft , about 8 minutes
add mushrooms and sautee another 2 minutes
in a large bowl combine musroom mixture with remaining ingredients and mix well
pour into 9″ round pan. bake for 45 minutes to 1 hour.