Somewhat Simple

Green Bean Casserole

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This green bean casserole is made from scratch, with tender green beans in a savory sauce, topped with crispy fried onions. It’s a healthy side dish that’s perfect for a holiday feast or a casual family dinner.

Classic side dishes are pretty much my favorite things ever. In fact, I usually fill up my plate with cream cheese mashed potatoes, pasta salad, oven-roasted vegetables, and strawberry pretzel squares, then maybe take a small pinch of whatever the main dish is! If you’re at all like me, this delicious side dish is for you!

A white baking dish filled with green bean casserole that was made from scratch, with healthy green beans, a cream of mushroom sauce and topped with crispy French's fried onions.

Homemade Green Bean Casserole

Did you grow up eating green bean casserole? My family rarely ate green beans when I was growing up, and they weren’t a regular part of our holiday menu. When I married into my husband’s family, though, I discovered the joy of a good green bean casserole.

My husband’s Grandma Jewel always makes the most amazing green bean casserole from scratch for every holiday and family dinner. Although her recipe is a closely guarded secret, this casserole is the closest I’ve been able to get to it after lots of experimenting at home.

It’s totally delicious, and packed with tender green beans, creamy mushroom sauce, and (of course!) topped by delicious and flavorful crispy fried onions. It’s everything you could want in a side dish!

How to Make Green Bean Casserole

I know there are a ton of recipes out there that use condensed soups (and they are delicious!) but I love figuring out ways to make things from scratch, so I decided to try making my own mushroom sauce. It turned out so good! I’m not sure I can go back to the canned stuff, to be honest.

The homemade mushroom sauce is simple and quick to make, and adds so much flavor to the casserole! I’ll include the recipe if you want to try it below, but if you’re looking for a shortcut, use a can of Campbell’s cream of mushroom soup – the green bean casserole will still be delicious, I promise!  If you plan on using the canned mushroom soup, skip to step 7.

  1. To make the mushroom sauce, melt the butter in a large skillet over medium heat
  2. Add the mushrooms to the skillet and cook, stirring frequently until the mushrooms are soft and have reduced in size
  3. Add in the flour and stir until the flour has been absorbed into the butter and then cook for 2-3 minutes
  4. Gradually whisk in the milk and cook until it has thickened
  5. Remove the sauce from heat and stir in the garlic powder, salt and pepper
  6. Add the green beans to the skillet and toss to coat
  7. **If you using a can of Campbell’s soup, add the green beans and soup to a mixing bowl and mix until evenly coated**
  8. Pour the green bean mixture into a 9 x 13 baking pan
  9. Top with fried onions (I love the French’s brand) and bake for 20-25 minutes at 350 degrees F

a white baking pan filled with fresh green beans and a creamy mushroom sauce

Recipe Tips

  • To speed things up, I usually use frozen green beans in this casserole, but if you have fresh green beans on hand, they will work too!
  • It’s a good idea to blanch them (cook them in boiling water until they’re softened) for about five minutes before using them. They will cook the rest of the way in the oven.

a white baking sheet filled with a classic green bean casserole recipe topped with French's fried onions that is ready to be baked in the oven

This casserole is one of our favorite side dishes for holidays or Sunday dinners! It really lets the flavor of the green beans shine, while still having all the goodness of comfort food. This dish is always a favorite!

a white bowl filled with a serving of homemade green bean casserole

Can I Make Green Bean Casserole Ahead Of Time

You can make the casserole itself a day in advance.  Store it in the refrigerator until you’re ready to make it.  However, leave the fried onions off until you are ready to put it in the oven or they will get soggy.  And let’s be honest, those crispy fried onions are the best part of this casserole!

How To Store Green Bean Casserole

Place any leftovers into an airtight container and store them in the refrigerator.  The casserole will stay fresh for about 5 days but the longer it’s in there, the soggier the fried onions will get.  While it’s not a perfect remedy, after I reheat the casserole I like

More Easy Casserole Recipes

Green Bean Casserole Recipe

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5 from 4 votes
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Green Bean Casserole

This green bean casserole is made from scratch, with tender green beans in a savory sauce, topped with crispy fried onions. So delicious!

Course Side Dish
Cuisine American
Keyword casserole, thanksgiving, vegetables
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Servings 8 People
Calories 300 kcal

Ingredients

  • 4 tablespoons butter
  • 4 ounces button mushrooms chopped
  • 3 tablespoons flour
  • 2 cups milk
  • 1 teaspoon salt
  • 1/4 teaspoon pepper
  • 1/2 teaspoon garlic powder
  • 16 ounces frozen green beans
  • 1 cup French's fried onions
  • ** OR ** 1 - 10.75 oz can cream of mushroom Campbell soup instead of the first 7 ingredients

Instructions

  1. Preheat the oven to 350.
  2. (If using canned mushroom sauce, skip to step 4.)

    To make your own mushroom sauce - Melt the butter in a large skillet over medium heat. Add the mushrooms to the skillet and cook, stirring frequently, until the mushrooms are softened and reduced in size.

  3. Add the flour to the skillet, and stir until all of the flour is absorbed into the butter. Cook 2-3 minutes. Slowly whisk in the milk, a little at a time, and cook until thickened. Remove the sauce from the heat and stir in the salt, pepper, and garlic powder. Taste and adjust seasonings if needed. Add the green beans to the skillet and toss to coat them completely.

  4. **If using canned mushroom soup - add the green beans to a bowl and mix with the cream of mushroom soup to evenly coat.**

  5. Pour the green bean mixture into a 9 x 9 (or equivalent sized) baking dish. Top with the fried onions. Bake 20-25 minutes, or until the sauce is bubbling and the fried onions are brown and crisp. Serve warm.

Nutrition Facts
Green Bean Casserole
Amount Per Serving
Calories 300
* Percent Daily Values are based on a 2000 calorie diet.

 

A white baking dish filled with a classic green bean casserole that was made from scratch, with healthy green beans, a cream of mushroom sauce and topped with crispy French's fried onions. At the bottom of the image in a white box are the words classic green bean casserole

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