Description
Creamy spinach casserole with mozzarella, Parmesan, and a golden breadcrumb topping makes the perfect Southern side dish. Rich, comforting, and holiday ready.
Ingredients
- 2 tablespoons butter
- 1 small onion, finely chopped
- 2 cloves garlic, minced
- 2 tablespoons all-purpose flour
- 1 1/2 cups whole milk
- 1/2 cup heavy cream
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1/4 teaspoon ground nutmeg
- 1/2 teaspoon garlic powder
- 1/2 cup grated Parmesan cheese
- 1 1/2 cups shredded mozzarella cheese, divided
- 20 ounces frozen chopped spinach, thawed and squeezed dry
- 1/2 cup sour cream
- 1/2 cup mayonnaise
- 1/2 cup panko breadcrumbs
- 1 tablespoon olive oil or melted butter
Instructions
- Preheat oven to 350°F and grease a 9×9-inch baking dish.
- Melt butter in a skillet; sauté onion 4–5 minutes. Add garlic and cook 30 seconds.
- Stir in flour and cook 1–2 minutes to form a roux.
- Whisk in milk and cream gradually; cook until thickened.
- Add salt, pepper, nutmeg, garlic powder, Parmesan, and 1 cup mozzarella; stir until melted.
- Mix spinach, sour cream, and mayonnaise in a bowl.
- Combine spinach mixture with cheese sauce and spread into baking dish.
- Top with remaining 1/2 cup mozzarella.
- Mix breadcrumbs with oil or butter and sprinkle on top.
- Bake 25–30 minutes until golden and bubbling. Rest 5–10 minutes before serving.
Notes
- Squeeze spinach thoroughly using a clean kitchen towel for best texture.
- Sauce should coat the back of a spoon before combining with spinach.
- Broil briefly at the end for extra crunch, but watch closely.
- Let rest before slicing for cleaner portions.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Side Dish
- Cuisine: Southern American