With just a handful of easy to find ingredients, this creamed spinach casserole recipe is great for both busy weeknights and holiday feasts! Ready in under 45 minutes, it's packed with creamy cheese, a crispy onion topping, and of course, nutritious spinach.
Thaw: Transfer frozen spinach to a sieve or colander and run warm water over it to thaw. Squeeze as much water as you can out of the spinach.
Garlic: Melt butter in a large skillet over medium heat, then add garlic. Cook until it begins to brown and become fragrant.
Cheese: Stir in cream cheese until it becomes warm and soft. Stir in gruyere and parmesan until melted, then stir in spinach.
Topping: Stir together fried onions and panko.
Assemble: Spoon spinach mixture into a 9x3'' (or similar) casserole dish. Top with fried onion mixture. (Optionally spray the top lightly with oil to promote browning.)
Bake: Bake on the center rack for 30 to 40 minutes, or until bubbling ad top is golden brown.