Homemade Green Bean Casserole Recipe

Homemade green bean casserole with bacon, fresh mushrooms, and sharp cheddar cheese is deliciously creamy without canned soup.

Kick the cans to the curb and make your green bean casserole from scratch this year. With a creamy sauce flavored with bacon, fresh mushrooms, and cheddar cheese, and topped with crunchy onions, these green beans will be the star of your dinner.

True of many of my recipes, this recipe still has a few shortcuts. Because when you’re prepping a thousand things for Thanksgiving dinner, a couple shortcuts are okay. They’re actually a really, really good idea.

About This Green Bean Casserole

Use frozen green beans. Of course, you can use fresh green beans if you want. Personally, I think green beans are one vegetable that tastes great frozen. I mean, not eaten while they’re still frozen. You know what I mean.

Canned crispy fried onion are essential. For those lovely golden brown onions on top, I use French’s crispy fried onions (NOT sponsored!). I love them, what can I say? There’s really no substitute for them unless you want to fry up some onions or shallots.

Skip the canned cream of mushroom soup. My recipe is a “no soup” recipe and it’s not filled with heavy cream either. A lovely, but simple white sauce takes the place of cream soup which is loaded with sodium (843 mg per serving!), fat, and weird ingredients like modified food starch, soy protein concentrate, monosodium glutamate (MSG), and yeast extract,

I’ll walk you through the recipe here to get you started and you’ll find a bunch of extra helpful tips, too. As always, the printable recipe card can be found near the end of the post. It has complete instructions, measurements, and nutrition information.

Ingredients You’ll Need

• French-Cut Frozen Green Beans: Really, you can use whatever type of green beans you prefer. Fresh green beans are crisper and fresher tasting; frozen or canned green beans are super fast. They don’t have to be french-cut either, but that’s what we prefer.
• Bacon: Many green bean casseroles are not made with bacon but green beans and bacon are a perfect match and you won’t be sorry you added it.
• Mushrooms: You won’t be using cream of mushroom soup with its rubbery little mushroom pieces. Your casserole will feature plenty of fresh, delicious, real mushrooms.
• Onion: A regular yellow cooking onion, finely diced, flavors the casserole with subtle savory flavor, along with a couple of garlic cloves.
• Butter, Flour, Milk: This simple trio makes a white sauce to take the place of cream of mushroom soup.
• Fresh Thyme: Thyme is a woody herb with very small leaves that complements green beans perfectly. If you don’t have fresh, dried thyme is a good substitute. Dry herbs are more potent than fresh herbs so use much less.
• Sharp Cheddar Cheese: You’ll love the cheesy sauce! It’s good on everything. I like to use white cheddar because it doesn’t give the casserole an orangey hue.
• French Fried Onions: The crispy onions are a must on this traditional green bean casserole. I use a LOT! You may add as many or as little as you prefer. I probably get a little carried away.

How To Make Green Bean Casserole

Although it is a bit more work than opening up a few cans and mixing everything together, this green bean casserole recipe isn’t difficult. The end result is worth the extra labor!

Prep the green beans. If you’re using fresh beans, they need to be snipped, washed, cooked lightly, and drained. An ice bath isn’t necessary because they’ll continue to cook in the casserole when it’s heated. Frozen beans need to be cooked and drained. Canned beans simply need to be drained.

Cook the bacon. First, chop the bacon into small pieces. I like to use thick slices of center cut bacon so there are more substantial pieces of bacon. In a large skillet, fry the bacon until it’s crisp. Take it out of the pan to drain on paper towels. Leave the grease in the pan.

Cook the onions and mushrooms. Add the chopped onions to the pan and cook them for a few minutes, and then add the mushrooms. Cook, stirring once or twice, until the mushrooms lose their liquid and begin to brown. Remove the onions and mushrooms with a slotted spoon and add them to a large mixing bowl with the green beans.

Make the sauce. Using the same skillet with any remaining juices, melt the butter with the garlic. Add the flour and cook it for a minute or two, stirring constantly. Slowly whisk in the milk and bring the sauce to a boil. You should have a creamy white sauce.

Stir in the shredded cheese and fresh thyme. Does your sauce remind you of anything? It’s the replacement for the canned cream of mushroom soup but so much better, especially once you add the mushrooms.

Mix everything together. Stir the creamy sauce into the bowl with the green beans, onions, garlic, and mushrooms.

Bake. Add the bacon, and stir until everything is coated with sauce. Pour it all into a greased baking dish.

Top with the crispy goodness of French fried onions and bake. Done!

FAQs

Make It Your Own

• Vegetarian/Meatless: Simply omit the bacon. Use a tablespoon of olive oil to sauté the vegetables.
• Green bean variations: Substitute fresh green beans or canned green beans for the frozen beans. Cook fresh green beans before adding; canned green beans can be drained and added without cooking.
• Try different cheese varieties. Other types of flavorful cheese can be subbed in for the cheddar. Try Parmesan, sharp provolone, Swiss, or Gruyère.
• Topping ideas: Top the casserole with sliced almonds or buttered bread crumbs instead of French fried onions.
• Not into green beans? Try one of these popular casserole recipes instead: cheesy baked corn with bacon, scalloped sweet potatoes with bacon and Gruyère, or cheesy Brussels sprouts au gratin.

Make-Ahead Ideas

Since holiday dinners can be a bit stressful with lots to do, you may want to get a little head start on this side dish. There are a couple of ways to do that.

One or two days ahead of time: Prep the beans (if using fresh), onions, and mushrooms. Wash, slice, bag and refrigerate them.

The day before: Prepare the whole casserole except for the onion topping and refrigerate it unbaked, covered well with foil or plastic wrap.

On the day of: Take the casserole out of the refrigerator to warm up a half hour while the oven preheats. Uncover, add the fried onion topping, and bake as directed, adding 5 to 10 minutes to the baking time.

Storage & Reheating Tips

Refrigerate: Leftover green bean casserole should be covered tightly and refrigerated within 2 hours. It will keep in the refrigerator for up to four days. It doesn’t freeze well.

Reheat: Microwave single servings at medium heat in 30 second increments or until heated through. If you prefer, reheat larger portions uncovered in the oven at 350°F for twenty minutes or until warm.

Note: The topping won’t be quite as crisp.

More Green Bean Recipes

• Roasted Green Beans
• Green Beans with Lemon and Feta
• Green Beans Almondine Recipe
• Green Beans with Bacon, Garlic, and Onion
• Mediterranean Green Bean Salad
• Pickled Green Beans – an easy quick pickle!
• Air Fryer Green Beans