Baked Spinach Gratin

Ashley Taylor
Ashley Taylor
Published: June 26, 2026
Tags: Vegetarian, Cheese, French-inspired, Spinach, Gratin, Baked Side Dish, Breadcrumb Topping, Holiday Side

Baked Spinach

A lighter spinach gratin baked with a small amount of butter, stock, cheese, and crisp breadcrumbs.

Prep Time:25 minCook Time:35 minTotal Time:60 minServings:6Difficulty:Medium

This baked spinach gratin keeps the comfort of a bubbling, browned vegetable dish without burying the greens under cream. The spinach is cooked down, squeezed dry, then simmered briefly with butter, flour, and stock so the filling turns silky rather than watery.

A modest amount of nutty cheese gives the dish depth, while the breadcrumb topping adds the browned edge that makes a gratin feel finished. Because the sauce is light, the spinach still tastes fresh and mineral instead of disappearing into dairy.

Fresh spinach gives the brightest flavor, but frozen spinach works well when it is fully thawed and squeezed with real pressure. The important cue is moisture: cook the chopped spinach until it begins to catch on the bottom of the pot before adding the flour.

Serve the gratin as a side for a holiday meal, a vegetable-focused dinner, or a simple lunch. It can also become a light supper with a poached or fried egg and a piece of crusty bread.

Nutrition (per serving)

Calories:165 kcal
Protein:8 g
Carbs:10 g
Fat:11 g

Directions

  1. 1
    A buttered baking dish prepared with garlic

    Heat the oven to 375°F. Rub a shallow 1-quart baking dish with the cut sides of the garlic, then butter the dish lightly.

  2. 2
    Fresh spinach wilting in a pot

    Place the damp spinach in a large pot over high heat. Cover and cook, stirring once or twice, until the leaves collapse, about 4 minutes for mature spinach or 2 minutes for baby spinach.

  3. 3
    Squeezed and chopped cooked spinach

    Transfer the spinach to a colander and rinse with cold water. Squeeze it in small handfuls until very dry, then chop it coarsely.

  4. 4
    Chopped spinach cooking in butter

    Wipe out the pot and melt 2 tablespoons of the butter over medium-high heat. Add the chopped spinach and cook for 2 to 3 minutes, stirring often, until excess moisture has boiled off and the spinach starts to stick.

  5. 5
    Flour sprinkled over cooked spinach

    Lower the heat to medium-low. Sprinkle the flour over the spinach and cook, stirring constantly, for 2 minutes so the flour loses its raw taste.

  6. 6
    Spinach simmering with vegetable stock

    Pour in the stock while scraping the bottom of the pot. Simmer for 1 minute, stirring often, until the spinach is lightly bound.

  7. 7
    Cheesy spinach spread in a baking dish

    Season with the salt and several grinds of black pepper. Stir in 1/2 cup of the grated cheese, then spread the spinach evenly in the prepared baking dish.

  8. 8
    Breadcrumb and cheese topping on spinach

    Mix the remaining 1/4 cup cheese with the breadcrumbs and scatter the mixture over the spinach.

  9. 9
    Finished spinach gratin browned on top

    Melt the remaining 2 tablespoons butter and drizzle it over the topping. Bake for about 30 minutes, until the gratin is hot throughout and lightly browned on top.

Ingredients

  • Garlic Clove, halved:1
  • Unsalted Butter, divided:4 tbsp
  • Fresh Spinach, stemmed and washed:3 lb
  • Kosher Salt:1 tsp
  • Freshly Ground Black Pepper:to taste
  • All-Purpose Flour:1 1/2 tbsp
  • Vegetable Stock:1 cup
  • Gruyere, Swiss, Or Comte Cheese, grated:3/4 cup
  • Fine Dry Breadcrumbs Or Panko:2 tbsp

Tips & Notes

  • To use frozen spinach, thaw three 10-ounce packages, squeeze them very dry, and chop only if the spinach is not already chopped.
  • For a richer version, replace part or all of the stock with whole milk or cream.
  • The spinach can be blanched, squeezed, and chopped up to a day ahead; keep it covered in the refrigerator.
  • The assembled gratin can wait in the refrigerator, then go into a preheated oven about 30 minutes before serving.