Swiss Chard au Gratin

Make eating your dark leafy greens delicious and nutritious with this easy, comforting Swiss Chard au Gratin! Perfect for Thanksgiving, Christmas, Easter, or anytime you want a side dish that feels fancy without the fuss.

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Swiss Chard au Gratin

I grew Swiss chard in my garden this year and it has been the best decision I’ve ever made.

A cut-and-come-again salad green that grows in all seasons because it’s a biennial? A sturdy, dark leafy green that isn’t bitter? Delicious, versatile ribs and leaves? And it’s a beautiful plant?

Sounds too good to be true, but Swiss chard really does it all. Needless to say, it’s my new favorite vegetable.

Whether you decide to grow your own Swiss chard or buy it, this Swiss Chard au Gratin is a delicious, easy way to eat up a bounty. My husband (not usually a huge veggie fan) ate over half of the dish the first time I made it. You can imagine how his jaw hit the floor when I told him he had eaten half a pound of Swiss chard in one sitting! So, next time you’re trying to get your dark leafy green fix, this is the best way to do it.

It’s fancy enough to be an elevated Thanksgiving, Christmas, or Easter side dish, but tasty and easy enough for an ordinary Tuesday. I promise that you’ll love it!

close-up of swiss chard au gratin in an enameled dutch oven with a few scoops removed

Is Swiss Chard au Gratin healthy?

Yes! Did I mention that it’s a full pound of Swiss chard? Talk about getting your dark leafy greens! It packs a ton of vitamin K (over 800% of the RDA) and a good bit of vitamin A, calcium, magnesium, and phosphorus. And since that chard is bathed in a creamy, cheesy sauce, there’s plenty of fat to help your body absorb those fat-soluble vitamins A and K.

If made with parmesan cheese on top, it’s also a great low-carb alternative to potatoes au gratin. Plus, thanks to the cheese, it also has a good bit of protein! With the fiber from the greens, it’s an incredibly satisfying side.

swiss chard au gratin in a red dutch oven on a wood table

What pairs well with Swiss Chard au Gratin?

I love to make Swiss Chard au Gratin as a side for a roast. Since it feels a bit fancy, it’s especially great to go with a Thanksgiving turkey, or a Christmas or Easter ham. However, it’s actually quite simple, so it really is just a delicious side to go with just about any dish. Keep it in mind for your next holiday meal or dinner party!

A side of swiss chard au gratin next to some Thanksgiving turkey

How long does this Swiss Chard au Gratin keep?

This Swiss Chard au Gratin is best enjoyed the day it’s made, but leftovers will keep for about 3 days. For best results, reheat in the oven at 400°F until heated through.

a scoop taken out of swiss chard au gratin in a red dutch oven with swiss chard leaves to the side

Ingredients

  • 3 tbsp butter, divided
  • 1 pound Swiss chard (leaves & ribs separated), chopped – I used a rainbow chard mix, but you can use whatever variety you have on hand.
  • 1 yellow onion, diced
  • 2 tbsp (15g) flour – all-purpose or whole wheat both work. If using fresh-milled flour, choose a low protein grain, like soft white wheat or rye.
  • 1/4 tsp nutmeg
  • 1/4 tsp cayenne – reduce to 1/8 tsp if sensitive to spice
  • 1/4 tsp white pepper – reduce to 1/8 tsp if sensitive to spice
  • 1 tsp salt
  • 1.5 cups whole milk – 2% or skim milk will also work, but may be less creamy
  • 1 cup shredded cheddar – I prefer extra sharp, but a milder cheddar will work too
  • 1/2 cup parmesan cheese or breadcrumbs – I like the parmesan for the extra protein and lower carbs, but it’s delicious with normal breadcrumbs or panko if that’s your preference.
the ingredients for swiss chard au gratin (with labels)

Directions

Step 1: Preheat oven to 400°F. If using separate dishes for the stovetop cooking and baking steps, be sure to grease the oven-safe dish. Note: A 2.5-quart enameled Dutch oven is great for this recipe because it goes straight from the stove to the oven, reducing the number of dished you need to do.

Step 2: Melt 1 tbsp butter in a medium-sized pot over medium heat. Working in batches, cook the Swiss chard leaves until soft and wilted. Set in colander and squeeze out as much extra liquid as possible (using a paper towel really helps here).

wilted swiss chard leaves in a red dutch oven on a stove

Step 3: While the Swiss chard cooks, warm the milk in the microwave (just a minute or two is fine).

Step 4: Melt 2 tbsp butter in the pot over medium heat, then add the onion and chard ribs until soft and translucent, about 5 minutes.

chopped onions and swiss chard ribs in a red dutch oven

Step 5: Sprinkle the flour, nutmeg, cayenne, white pepper, and salt over the onion. Cook for 2 minutes, being careful not to let it burn.

chopped onions and swiss chard ribs with flour, salt, and spices added

Step 6: Stir in the milk and continue to stir until it thickens significantly (it should coat the back of the spoon). Make sure to thoroughly scrape off any flour stuck to the bottom of the pan, then turn off the heat.

making the roux for swiss chard au gratin

Step 7: Stir in the squeezed-out wilted Swiss chard leaves, then stir in the cheese until fully melted and fully mixed into the sauce.

adding shredded cheddar cheese to swiss chard au gratin

Step 8: Top with breadcrumbs or parmesan. Bake uncovered 25-30 minutes.

unbaked swiss chard au gratin, topped with parmesan cheese

Step 9: Allow to rest 5 minutes, then serve and enjoy!

swiss chard au gratin in a red dutch oven, freshly baked

Equipment

*Disclosure: I only recommend products that I use or would use myself. The links above are affiliate links, which means that I earn a commission (at no cost to you!) if you make a purchase using the link.


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swiss chard au gratin in a red dutch oven with swiss chard leaves to the side

Swiss Chard au Gratin

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Make eating your dark leafy greens delicious and nutritious with this easy, comforting Swiss Chard au Gratin! Perfect for Thanksgiving, Christmas, Easter, or anytime you want a side dish that feels fancy without the fuss.

  • Total Time: 1 hour
  • Yield: 6 servings

Ingredients

  • 3 tbsp butter, divided
  • 1lb Swiss Chard (leaves & ribs separated), chopped
  • 1 yellow onion, diced
  • 2 tbsp (15g) flour
  • 1/4 tsp nutmeg
  • 1/4 tsp cayenne (reduce to 1/8 tsp if sensitive to spice)
  • 1/4 tsp white pepper (reduce to 1/8 tsp if sensitive to spice)
  • 1 tsp salt
  • 1.5 cups whole milk
  • 1 cup shredded cheddar
  • 1/2 cup parmesan cheese (or breadcrumbs)

Instructions

  1. Preheat oven to 400°F. If using separate dishes for the stovetop cooking and baking steps, be sure to grease the oven-safe dish.
  2. Melt 1 tbsp butter in a medium-sized pot over medium heat. Working in batches, cook the Swiss chard leaves until soft and wilted. Set in colander and squeeze out as much extra liquid as possible (using a paper towel really helps here).
  3. While the Swiss chard cooks, warm the milk in the microwave (just a minute or two is fine).
  4. Melt 2 tbsp butter in the pot over medium heat, then add the onion and chard ribs until soft and translucent, about 5 minutes.
  5. Sprinkle the flour, nutmeg, cayenne, white pepper, and salt over the onion. Cook for 2 minutes, being careful not to let it burn.
  6. Stir in the milk and continue to stir until it thickens significantly (it should coat the back of the spoon). Make sure to thoroughly scrape off any flour stuck to the bottom of the pan, then turn off the heat.
  7. Stir in the squeezed-out wilted Swiss chard leaves, then stir in the cheese until fully melted and fully mixed into the sauce.
  8. Top with breadcrumbs or parmesan. Bake uncovered 25-30 minutes.
  9. Allow to rest 5 minutes, then serve and enjoy!

Notes

A 2.5-quart enameled Dutch oven is great for this recipe because it goes straight from the stove to the oven, reducing the number of dished you need to do.

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I’m Alyssa

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I’m so glad you’re here! As a wife, mama, and follower of Christ, I love cooking nutritious food from scratch. Here we celebrate the good, the true, and the beautiful in food, family, and faith. Follow me for easy, real food recipes for the practical home cook on a budget and some occasional musings about homemaking and liturgical living.

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