This inexperienced bean casserole recipe is a scrumptious vacation facet dish! It is made out of scratch with contemporary inexperienced beans and a creamy mushroom sauce.

Inexperienced bean casserole is all the time on my household’s Thanksgiving menu. We, like many of us, made the traditional model with Campbell’s cream of mushroom soup, french fried onions, and canned inexperienced beans for years…till I set myself the duty of creating a do-it-yourself inexperienced bean casserole from scratch.
Let me introduce you to the outcomes: this inexperienced bean casserole recipe. It stars contemporary inexperienced beans, crispy onions, and a creamy mushroom sauce that blows the canned soup out of the water. As soon as I attempted it, I couldn’t return to the Campbell’s model, and I don’t assume you’ll be capable of both.
This inexperienced bean casserole recipe is contemporary, colourful, and full of savory taste. Add it to your vacation desk this 12 months, and it’s assured to be successful.

Inexperienced Bean Casserole Substances
Right here’s what you’ll have to make this recipe:
- Contemporary inexperienced beans, in fact! I like slender haricots verts finest, however any kind will do. In a pinch, frozen inexperienced beans are a high quality substitute for contemporary.
- Cremini mushrooms – For the do-it-yourself mushroom sauce. Swap in white button mushrooms should you want!
- Tamari or soy sauce – It brings out the mushrooms’ umami taste.
- Garlic and thyme – They add contemporary, earthy taste to the sauce.
- Dijon mustard – For tangy taste.
- Milk (any form!) and Parmesan cheese – They offer the mushroom sauce its creamy texture.
- All-purpose flour – It thickens the sauce.
- French fried onions – They create the casserole’s crispy, savory topping.
- Further-virgin olive oil – For richness.
- And salt and pepper – To make all of the flavors pop!
Discover the entire recipe with measurements under.
Variation
As a substitute of utilizing store-bought french fried onions, make crispy baked onions from scratch! It solely takes about half-hour, and it’s so scrumptious. Discover the complete directions within the recipe notes under.

The way to Make Inexperienced Bean Casserole
You’ll find the entire recipe with measurements on the backside of this submit, however for now, right here’s an summary of the way it goes:
Begin with the onions, should you’re making them from scratch. Tossed with flour, panko, olive oil, and salt, they take about 25 minutes to turn into crisp and golden brown within the oven.
Then, blanch the inexperienced beans till they’re crisp-tender and vibrant inexperienced. Drain and unfold them on a kitchen towel to dry.

Subsequent, make the sauce. Sauté the mushrooms, then add all of the sauce components besides the Parmesan. Simmer till thickened, round 20 minutes. End the sauce with the cheese and black pepper.

Lastly, assemble and bake! Get pleasure from scorching from the oven.

Finest Inexperienced Bean Casserole Recipe Ideas
- Be certain your inexperienced beans are dry. Nobody likes a watery inexperienced bean casserole, so dry the inexperienced beans completely after you blanch them!
- Watch the onions carefully should you’re making them from scratch. They’ll rapidly go from good to burned, so be sure that to regulate them within the oven. I additionally wish to rotate the pans each 10 minutes to assist them prepare dinner evenly.

Are you able to make inexperienced bean casserole forward of time?
Sure! You may make this casserole as much as a day upfront. Right here’s how:
- Blanch the inexperienced beans.
- Make the mushroom cream sauce.
- Layer the sauce and inexperienced beans within the casserole dish. Cowl tightly and retailer within the fridge till simply earlier than serving.
- In the event you’re making the onions from scratch, retailer them at room temperature for as much as 1 day.
- Once you’re able to bake, uncover the casserole and add the onion topping. Bake in response to the recipe.
Storage
This recipe is finest on the day it’s made, however leftovers preserve nicely for as much as 2 days. Retailer them in an hermetic container within the fridge, and reheat within the microwave or a 350°F oven.

Extra Favourite Thanksgiving Recipes
In the event you love this recipe, strive one in every of these Thanksgiving facet dishes subsequent:

Inexperienced Bean Casserole
Serves 8
This inexperienced bean casserole recipe is a scrumptious do-it-yourself model of the traditional vacation facet dish. It is made with contemporary inexperienced beans and a from-scratch creamy mushroom sauce. I wish to prime it with crispy baked onions (see the notes under!), however store-bought crispy fried onions work right here too.
Stop your display from going darkish
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Preheat the oven to 400°F. Flippantly grease a 9×13-inch baking dish.
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Carry a big pot of salted water to a boil and set a big bowl of ice water close by. Drop the inexperienced beans into the boiling water and blanch for 4 minutes. Instantly switch to the ice water to cease the cooking course of. Drain and switch to a towel to dry.
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Warmth the olive oil in a big skillet over medium warmth. Add the mushrooms and prepare dinner till gentle, 8 to 10 minutes. Stir within the tamari, garlic, and thyme. Sprinkle the flour over the mushrooms and stir once more. Add the milk and mustard and stir to mix. Simmer till thickened, whisking usually, 15 to twenty minutes. Stir within the Parmesan cheese and pepper.
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Unfold ⅓ of the sauce on the backside of the baking dish. Unfold the inexperienced beans evenly on prime, then prime with the remaining sauce. Sprinkle on the onions and bake, lined, for 10 minutes. Uncover and bake for 10 extra minutes. If the onions begin to brown an excessive amount of, cowl the dish for the rest of the baking time. Garnish with sprinkles of Parmesan, if desired. Serve scorching.
Thinly slice 2 medium yellow onions. In a big bowl, toss the onions with 4 teaspoons olive oil, 1/2 cup all-purpose flour, 2 tablespoons panko bread crumbs, and 1/2 teaspoon sea salt. Unfold evenly on the baking sheets and bake for 25 to 35 minutes, tossing each 10 minutes (rotating the pans within the oven as essential), till evenly browned and crispy. Retailer at room temperature till you are able to assemble the casserole.
Vegan possibility: Omit the cheese and add a couple of further pinches of salt to the mushroom sauce.
