Cook spinach according to directions, drain well. Melt margarine in a skillet and sautee garlic. (I cheated and melted margarine in the microwave and scooped garlic from the jar). Blend potato starch, stir in onion soup, remove from heat. Stir beaten eggs and matzah meal into spinach, add soup mixture and salt and pepper. Pour into well greased ½ quart casserole dish. Bake at 350 for 25 mins.
Recipe by mommy's two cents at http://mommystwocents.com/2016/04/passover-the-spinach/