1 lg. onion, chopped
1 tbsp. vegetable oil
1 pkg. frozen chopped spinach, thawed & pressed dry
5 eggs, beaten
3 c. shredded Muenster cheese
1/4 tsp. salt
1/8 tsp. pepper

Saute onion in oil and large skillet until tender. Add spinach and cook until moisture evaporates; cool. Combine eggs, cheese, salt and pepper. Stir into spinach mixture. Pour into greased 9-inch pie pan. Bake at 350 degrees for 30 minutes or until set.