Preheat oven to 350F. Cook spinach according to package directions; drain well. Place on bottom of shallow casserole. Sprinkle with salt. Add onion and 1/4 cup melted butter. Layer half the grated cheese over spinach. Wash, dry and slice mushrooms. Saute In butter and add to casserole. Sprinkle garlic over all and add remaining cheese. Bake.
Cajun Country -- New Iberia, Louisiana