Yield: 8 servings
In large bowl, combine farfel with water; let cool. Beat in egg yolks, salt, pepper and thyme.
In large skillet, heat oil over medium-high heat. Cook mushrooms, onion and celery until softened, about 5 minutes.
Remove 12 large mushroom slices for garnish. Stir remaining mushroom mixture into farfel mixture.
Beat egg whites until stiff glossy peaks form. Stir about one-quarter of the whites into farfel mixture; fold in remaining whites.
Transfer to greased 8-inch (2 L) square baking dish. Garnish with reserved mushrooms. Top with paprika. Bake in 350 degrees F oven for 30 to 35 minutes or until puffed and golden brown.