Spinach Parmesan Casserole

6 Servings
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes

Spinach Casserole is an easy weeknight side dish with fresh spinach, butter, olive oil, garlic and Parmesan cheese. Make in 30 minutes!

Steakhouse Creamed Spinach is the cheesiest, most decadent Side Dish so we usually save it for a Holiday dinner. This yummy, easy spinach casserole is a lighter side perfect for weeknight Dinners when you need a delicious side dish with minimal prep time and bake time.

Fresh spinach is a healthy, delicious veggie that makes weeknight dinners a breeze. Spinach and a handful of ingredients turn into a weeknight side dish that goes perfect with all your family’s favorite dinner recipes. This simple cheesy spinach casserole is made in less than 30 minutes so you can make it anytime you need a quick vegetable dish.

About our Spinach Parmesan Casserole Recipe

Just because Parmesan Spinach Casserole is a light dish, doesn’t mean that it’s not packed with flavor! This delicious spinach casserole recipe is filled with buttery, garlicky sauce and nutty Parmesan cheese in every bite. The golden-brown Parmesan cheese crust adds a tasty crunchy texture and extra layer of flavor.

This Parmesan Spinach Casserole is a tasty veggie side that you can feel good about serving any time of the year. It’s a low-carb, gluten-free, and vegetarian side dish packed with flavor and vitamins. Loaded with vitamin A, calcium, and potassium, this is the best cheesy Spinach Casserole to give your family the nutrition they need in a yummy veggie dish they love.

Parmesan Spinach Casserole is an easy recipe for busy weeknights but it’s also a beautiful spinach casserole, making a great choice for dinner parties too. You can prepare it ahead of time or put it together while your main dish is in the oven or slow cooker. This Parmesan Spinach Casserole also makes a lighter steak dinner side dish for special occasions too!

Spinach Parmesan Casserole Ingredients

  • Spinach: Baby spinach is perfect because it’s less bitter and you don’t have to do any trimming (and usually no cleaning) meaning way less prep time! The fresh spinach leaves need to be cooked for about a minute ahead of time so your casserole isn’t watery. You just cook them long enough to wilt and release any excess moisture but not fully cooked.
  • Butter and Olive Oil: Heating butter and oil together actually increases the smoking point of the butter so it won’t burn while you cook the garlic. Plus you still get that rich buttery flavor instead of just olive oil.
  • Seasonings: This delicious casserole is flavored with just a few basic seasonings. Some fresh garlic, Italian seasoning, and kosher salt are all this light and tasty spinach recipe needs.
  • Parmesan Cheese: The freshly grated Parmesan cheese adds another layer of salty, nutty flavor plus it forms an amazing, cheesy crust. It makes the dish taste decadent and rich without adding tons of calories or fat!
Parmesan Spinach Casserole ingredients

Kitchen Tools & Equipment

  • Baking Dish: This recipe is made in an 8 by 8 inch baking dish for a casual weeknight dinner and serves about 6 people. If you want to serve a larger crowd, double the recipe and bake it in a 9×13-inch baking dish.
  • Oven: This recipe starts on the stove top and finishes in the oven on fairly high heat. Baking it in a 400 degree oven means a quicker cook time, just long enough to get a melty cheesy bubbly spinach casserole.

How to Make Spinach Parmesan Casserole 

Time needed: 30 minutes.

  1. Prep Time

    Preheat your oven. Grease a square 8 or 9 inch baking dish with butter. Fill a large pot with 5 cups of salted water. Bring to a boil.

  2. Blanch the Spinach

    Once the water is boiling, add the fresh baby spinach leaves and cover. Cook for 1 minute or until just wilted then drain spinach well. Pat the spinach dry and set aside.Parmesan Spinach Casserole cooked spinach in pan

  3. Make the Sauce

    Heat the butter and oil over low-medium heat. Add the garlic and Italian seasoning to the melted butter mixture and season with salt. Cook until the garlic is tender and fragrant.Parmesan Spinach Casserole ingredients in cooking pan

  4. Bake the Casserole

    Add the cooked spinach to the prepared baking dish. Cover with the butter mixture and top with grated Parmesan cheese. Bake for 10-15 minutes, until the spinach mixture is bubbly and the cheese is golden brown perfection. Serve hot.Parmesan Spinach Casserole in baking dish

Nutritional Facts

Nutrition Facts
Parmesan Spinach Casserole
Amount Per Serving
Calories 250 Calories from Fat 189
% Daily Value*
Fat 21g32%
Saturated Fat 10g63%
Trans Fat 0.4g
Polyunsaturated Fat 1g
Monounsaturated Fat 9g
Cholesterol 36mg12%
Sodium 753mg33%
Potassium 878mg25%
Carbohydrates 7g2%
Fiber 4g17%
Sugar 1g1%
Protein 11g22%
Vitamin A 14614IU292%
Vitamin C 43mg52%
Calcium 366mg37%
Iron 5mg28%
* Percent Daily Values are based on a 2000 calorie diet.

Cooking Spinach Parmesan Casserole Tips & Tricks

For easier clean up and a delicious spinach casserole that’s never watery, follow these tips!

  1. Cooking Process for Perfect Spinach
    • The reason you cook the spinach beforehand is to remove the bitterness and it releases the excess water so you don’t have a watery casserole. You can cool the spinach in ice water before draining to stop the cooking and preserve more of the color and texture.
  2. Make it a One Pan Dish
    • If you have a large dutch oven, you can easily make this a one pan dish. Just boil the spinach in the pot, then drain and wipe out any excess water before making the butter mixture. Stir the spinach into the butter, cover with cheese and bake as usual.

What to Pair With Spinach Parmesan Casserole

Weeknight Dinner: Serve your Parmesan Spinach Casserole with all your favorite easy, weeknight main dishes like Garlic Pork Loin or Classic Meatloaf. Your Spinach Casserole can bake in the oven while your meat rests and be done by the time you set the table.

Holiday Dinner: This light and easy Parmesan Spinach Casserole is perfect low-carb side for Thanksgiving, Christmas Dinner, and Easter to make more room for Baked Mac and Cheese, Mashed Potatoes, and Roast Turkey

How to Store Spinach Parmesan Casserole

  • Store: Don’t leave Parmesan Spinach Casserole for more than 2 hours at room temperature. Refrigerate leftover Spinach Casserole in an airtight container or covered with plastic wrap for up to 5 days.
  • Reheat: It’s best to reheat this spinach casserole in a 350 degree oven until it’s warmed through. Cover it with foil so it doesn’t dry out or burn while it heats up.
  • Freeze: This casserole can be frozen wrapped tightly with plastic wrap or in a sealed container for up to 3 months. Cool completely before freezing to keep moisture from collecting.

Ideas to Serve Spinach Parmesan Casserole

Breadcrumb Topping: Add more crunch to the topping by mixing a half cup of Italian bread crumbs with the Parmesan cheese.

Buttery Cracker Topping: Another crunchy topping you could add is buttery cracker crumbs. Toss them with the cheese and bake as usual.

Crispy Onion Topping: If you have some French-fried onions in your cabinet, like the kind you use for other holiday casseroles, why not sprinkle those on top for a savory, crispy topping.

Alternative Spinach Parmesan Casserole Cooking Techniques

Vegan Spinach Parmesan Casserole: Make this a vegan Spinach Casserole by substituting nutritional yeast and bread crumbs for the topping and replacing the butter with more olive oil or your favorite vegan butter. Nutritional yeast has a delicious nutty, Parmesan cheese taste without dairy and can be found at most natural food stores.

FAQ for Spinach Parmesan Casserole

Can I use frozen spinach in Parmesan Spinach Casserole?

You can definitely use frozen spinach in place of fresh spinach in this casserole dish. Thaw your spinach and drain well. Since 1 ½ cups of fresh spinach equals about 10 ounces of frozen spinach, you will want to use about 15 ounces of frozen spinach in this recipe.

Why should you pre-cook spinach for casseroles?

It might not look like it but fresh spinach leaves have a lot of excess water that gets released as they cook. To prevent a watery casserole, it is best to cook the spinach for a minute then drain it well before adding it to the dish.

Parmesan Spinach Casserole on serving plate with chicken and bread 1x1

Recipe Card

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Parmesan Spinach Casserole

Spinach Casserole is an easy weeknight side dish with fresh spinach, butter, olive oil, garlic and Parmesan cheese. Make in 30 minutes!
Yield 6 Servings
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Course Side Dish
Cuisine American
Author Sabrina Snyder


  • 2 pounds fresh baby spinach
  • 5 tablespoons butter
  • 3 tablespoons olive oil
  • 3 garlic cloves , minced
  • 1 tablespoon Italian seasoning
  • 3/4 teaspoon salt
  • 1 cup Parmesan cheese , grated


  • Preheat oven to 400 degrees. Grease an 8×8 baking dish.
  • In a large pot bring 5 cups lightly salted water to a boil.
  • Add spinach and 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 baking dish. Drizzle with butter mixture and sprinkle with cheese.
  • Bake uncovered for 10-15 minutes, until cheese is lightly browned.


Calories: 250kcal | Carbohydrates: 7g | Protein: 11g | Fat: 21g | Saturated Fat: 10g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 9g | Trans Fat: 0.4g | Cholesterol: 36mg | Sodium: 753mg | Potassium: 878mg | Fiber: 4g | Sugar: 1g | Vitamin A: 14614IU | Vitamin C: 43mg | Calcium: 366mg | Iron: 5mg
Keyword: Paremsan Spinach Casserole, spinach parmesan casserole

Spinach Parmesan Casserole Variations

  • Greens: Use your favorite fresh leafy greens instead of spinach like kale, mustard greens, or Swiss chard. You may need to boil them just a bit longer until they are wilted.
  • Veggies: The melted butter garlic sauce and grated Parmesan topping would go great on other veggies like zucchini, summer squash, cauliflower, or broccoli.
  • Cream Cheese: Make this a creamy spinach bake by melting cream cheese in with your butter, olive oil, and garlic before pouring it over the spinach.
  • Cheese: Go from Italian-inspired to Greek by substituting feta cheese for the Parmesan. You can also add other shredded cheese like cheddar cheese, mozzarella cheese, or Swiss cheese.
  • Seasoning: Give this Spinach Casserole different flavors by adding red pepper flakes, ground nutmeg, chili powder, or paprika.

More Delicious Spinach Recipes

Parmesan Spinach Casserole collage

About the Author: Sabrina Snyder

Sabrina is a professionally trained Private Chef of over 10 years with ServSafe Manager certification in food safety. She creates all the recipes here on Dinner, then Dessert, fueled in no small part by her love for bacon.

Sabrina Snyder is a professionally trained personal and private chef of over 10 years who is the creator and developer of all the recipes on Dinner, then Dessert.

She is also the author of the cookbook Dinner, then Dessert – Satisfying Meals Using Only 3, 5 or 7 Ingredients, published by Harper Collins.

She started Dinner, then Dessert as a business in her office as a lunch service for her coworkers who admired her lunches before going to culinary school and becoming a full time personal chef and private chef.

As a personal chef Sabrina would cook for families one day a week and cook their entire week of dinners. All grocery shopping, cooking and cleaning was done along with instructions on reheating. As a private chef she cooked for private parties and cooked in family homes in the evenings for families on a nightly basis after working as a personal chef during the day.

Sabrina has been certified as a ServSafe Manager since 2007 and was a longstanding member of the USPCA Personal Chef Association including being on the board of the Washington DC Chapter of Chefs in the US Personal Chef Association when they won Chapter of the year.

As a member of the community of food website creators Sabrina Snyder has spoken at many conferences regarding her experiences as a food writer including the Indulge Food Conference, Everything Food Conference, Haven Food Conference and IACP Annual Food Professionals Conference.

Sabrina lives with her family in sunny California.

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