Skip to Content

Scrumptious Green Beans Au Gratin

Are you a fan of classic green beans and looking for a delicious twist on your traditional green bean casserole? Look no further! This green beans au gratin recipe is a cheesy, mouth-watering dish that’s perfect for any occasion, whether it’s a cozy family dinner, holiday meal, or any festive special occasion.

pan of green beans au gratin

A Cheesy Delight That Everyone Will Love

There are all sorts of ways to make a green bean casserole or even these stovetop cheesy green beans. And they’re all wonderful. This green beans au gratin casserole recipe is one that cheese lovers will definitely want to try.


All of the ingredients listed below are easy to find at any grocery store. Here’s what you’ll need:

  • Fresh Green Beans: 2 cups precooked
  • Cheddar Cheese: 1/3 cup diced
  • Milk: 1 cup
  • Dry Mustard: 1/8 teaspoon
  • Salt: 1/2 teaspoon
  • Flour (regular or gluten-free): 1 tablespoon
  • Butter: 2 tablespoons
  • Parmesan Cheese: 1/2 cup shredded
  • Optional: Paprika for garnish

How to Make Green Beans Au Gratin

You’ll love how easy it is to make this delightful cheesy green beans au gratin dish! Start by preheating your oven to 350 degrees F. This ensures your green bean gratin will cook evenly. Now it’s time to make the cheese sauce. In a skillet, over medium heat, melt the butter. Whisk in the flour, salt, and dry mustard.

Cook until the mixture becomes bubbly, infusing the base with flavor. Gradually add the milk, stirring continuously until the sauce is smooth.Add the diced cheddar cheese to the sauce and stir until it’s completely melted. This cheesy goodness is the heart of the dish.

skillet and spoon with cheese sauce

Add your precooked fresh green beans to the mix. Stir gently to ensure they’re fully coated with the luscious cheese sauce. Transfer the green bean mixture into a buttered baking dish. This step is crucial for that perfect gratin texture.

Sprinkle a generous layer of shredded parmesan cheese over the top. This will give your gratin a golden brown and crispy finish. Bake in the oven for about 30 minutes. You’re looking for a bubbly interior and a golden-brown crust.

pan of green beans au gratin

Garnish and Serve. If you like, garnish with a sprinkle of paprika for an added touch of color and flavor. If you want even more color, sprinkle some diced tomatoes or red peppers over the top.

Why You’ll Love This Recipe

There are so many reasons to love this wonderful recipe. Here are some of them:

  • Flavorful and Cheesy: With the combination of cheddar and parmesan cheese, this dish takes the love for green beans to a new level.
  • Perfect for Any Occasion: Whether it’s a family dinner or a festive gathering, this green bean gratin is sure to impress.
  • Customizable: Feel free to add freshly ground black pepper or substitute heavy cream for milk for a richer taste. You can also add other seasonings if you want.
  • Gluten-Free Option: Simply use gluten-free flour to cater to all dietary needs.

What to Serve with Green Beans Au Gratin

This yummy side dish goes with almost anything. Here are some main dishes I like to serve it with:

Chicken and Polenta Dinner – This is one of our favorite ways to enjoy chicken. If you’ve never had polenta before, it’s time to give it a try!

chicken and polenta in a pan

Air Fried Tilapia – Take the fish out of the freezer and put it in your air fryer still frozen. After you read the full directions for this easy method of cooking tilapia, you’ll want to make it often!

baked tilapia on a plate

Roasted Turkey Tenderloin – There’s no reason to wait for the holidays to cook turkey. Roasted to perfection, it’s so delicious that you’ll want to serve it throughout the year.

slices of roasted turkey tenderloin

Mexican Ground Beef Patties – Add a little zing to your hamburger patties. Try this recipe, and you’ll see what I’m talking about!

plate with Mexican ground beef with Ro-Tel, yellow rice, and green beans

Pesto Chicken – If you like chicken with lots of juicy flavor, you’ll love this easy pesto chicken from Back to My Southern Roots!

pesto chicken on a plate

T-Bone Steak – This air fried T-bone steak is super easy, and the results are amazing! After dinner, clean up is an absolute breeze!

plate of T-bone steak

Air Fryer Pork Tenderloin – Need dinner in a hurry? Then skip the oven and air fry your pork tenderloin. Dinner is served!

sliced pork tenderloin

Wonderful Flavor of Green Beans Au Gratin

This green beans au gratin dish is a testament to how versatile and delightful green beans can be. It’s a classic green bean dish with a cheesy twist that’s bound to become a new favorite in your recipe collection. Give it a try!

Yield: 6 servings

Green Beans Au Gratin

pan of green beans au gratin

Add flavor and nutrition to any meal with delicious green beans au gratin!

Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes


  • 2 cups precooked green beans (canned or fresh green beans
  • 1/3 cup diced cheddar cheese
  • 1 cup milk
  • 1/8 teaspoon dry mustard
  • 1/2 teaspoon salt
  • 1 tablespoon flour (regular or gluten-free)
  • 2 tablespoons butter
  • 1/2 cup shredded parmesan cheese
  • Paprika for garnish (optional)


  1. Preheat oven to 350 degrees F. Grease or butter a baking dish.
  2. Melt the butter in a skillet over medium heat.
  3. Whisk in the flour, salt, and dry mustard. Allow the mixture to become bubbly.
  4. Now gradually add the milk. Stir continuously until the sauce is smooth.
  5. Add the diced cheddar cheese to the mixture in the pan. Stir until the cheese completely melts.
  6. Add the precooked green beans to the mixture. Stir until they are completely coated with the cheese sauce.
  7. Pour the green bean mixture into the greased baking dish.
  8. Now sprinkle the shredded parmesan cheese over the top. You can add more than the recipe calls for if you like.
  9. Bake for 30 minutes or until you have a golden-brown crust.
  10. Garnish with paprika to add a bit more color and some extra flavor. Serve and enjoy!


You can add your favorite seasonings to the cheese mixture. Try a little oregano, basil, or even a light amount of cinnamon.

For more color sprinkle diced tomatoes or red peppers over the top.

Nutrition Information



Serving Size


Amount Per Serving Calories 135Total Fat 9gSaturated Fat 5gTrans Fat 0gUnsaturated Fat 3gCholesterol 25mgSodium 385mgCarbohydrates 8gFiber 2gSugar 4gProtein 7g

The nutrition information is a product of online calculators. I try to provide true and accurate information, but these numbers are estimates.

Did you make this recipe?

Please leave a comment on the blog or share a photo on Pinterest

Please feel free to share!

Skip to Recipe