Preheat oven to 400°. In a stockpot, bring 5 cups water to a boil. Add spinach; cook, covered, 1 minute or just until wilted. Drain well., In a small skillet, heat butter and oil over medium-low heat. Add garlic, Italian seasoning and salt; cook and stir until garlic is tender, 1-2 minutes., Spread spinach in a greased 1-1/2-qt. or 8-in. square baking dish. Drizzle with butter mixture; sprinkle with cheese. Bake, uncovered, until cheese is lightly browned, 10-15 minutes.