I have a couple. One is from an old Bisquick Cookbook: Impossible Spinach Pie
10 oz frozen spinach, thawed and drained
1 cup shredded Swiss cheese
1/2 cup chopped onion
1-1/2 cups milk
3 eggs
3/4 cup Bisquick Baking Mix
1 tsp salt
1/4 tsp pepper
1/4 tsp ground nutmet
Heat oven to 400 degrees. Grease pie plate, 10x1-1/2". Mix spinach, cheese and onion in plate. Beat remaining ingredients until smooth. 15 seconds in blender on high or 1 minute with hand beater. Pour into plate. Bake until knife inserted in center comes out clean, about 30 minutes. Cool 5 minutes. Makes 6 servings.
The 2nd recipe is from 1968 Edition of BHG New Cookbook: Spinach Elegante
2-10 oz packages frozen chopped spinach
3 slices bacon, cooked and crumbled
6 oz sliced mushrooms, drained
1/4 tsp dried marjoram, crushed
1 cup dairy sour cream
1/2 cup shredded cheese
Cook spinach according to package directions. Drain well; spread on bottom of 10x6x1-1/2" baking dish. Arrange bacon and mushrooms over spinach. Sprinkle with pepper and marjoram. Bake at 325 degrees for 15 minuts. Cover with sour cream and cheese. Return to oven 5 minutes or till cheese melts. Serves 6.