How to Prepare: 1/2 onion, chopped and sauteed 1 bunch spinach, rinsed, added to onion. When the spinach wilts, remove from heat, transfer to bowl. Add 1/4 c. finely chopped walnuts. Mix well with spinach and onions. Stuff into prepared white button mushrooms, washed, with stems removed, onto parchment paper or aluminum on a baking sheet. Bake at 375 for approx. 20 mins.