This inexperienced bean casserole recipe is a scrumptious vacation aspect 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 people, made the basic model with Campbell’s cream of mushroom soup, french fried onions, and canned inexperienced beans for years…till I set myself the duty of constructing 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 suppose you’ll be capable to both.
This inexperienced bean casserole recipe is contemporary, colourful, and filled with savory taste. Add it to your vacation desk this yr, and it’s assured to be a success.

Inexperienced Bean Casserole Elements
Right here’s what you’ll have to make this recipe:
- Recent inexperienced beans, after all! I like slender haricots verts finest, however any sort will do. In a pinch, frozen inexperienced beans are a superb substitute for contemporary.
- Cremini mushrooms – For the do-it-yourself mushroom sauce. Swap in white button mushrooms if you happen to favor!
- 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 provide the mushroom sauce its creamy texture.
- All-purpose flour – It thickens the sauce.
- French fried onions – They create the casserole’s crispy, savory topping.
- Additional-virgin olive oil – For richness.
- And salt and pepper – To make all of the flavors pop!
Discover the entire recipe with measurements beneath.
Variation
As an alternative 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 beneath.

The right way to Make Inexperienced Bean Casserole
You’ll find the entire recipe with measurements on the backside of this put up, however for now, right here’s an summary of the way it goes:
Begin with the onions, if you happen to’re making them from scratch. Tossed with flour, panko, olive oil, and salt, they take about 25 minutes to develop 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 substances besides the Parmesan. Simmer till thickened, round 20 minutes. End the sauce with the cheese and black pepper.

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

Greatest Inexperienced Bean Casserole Recipe Ideas
- Ensure that 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 if you happen to’re making them from scratch. They will rapidly go from good to burned, so ensure that to keep watch over 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 can also make this casserole as much as a day prematurely. 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.
- Should you’re making the onions from scratch, retailer them at room temperature for as much as 1 day.
-  If you’re able to bake, uncover the casserole and add the onion topping. Bake based on the recipe.
Storage
This recipe is finest on the day it’s made, however leftovers preserve properly 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
Should you love this recipe, attempt one among these Thanksgiving aspect dishes subsequent:

Inexperienced Bean Casserole
Serves 8
This inexperienced bean casserole recipe is a scrumptious do-it-yourself model of the basic vacation aspect 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 beneath!), however store-bought crispy fried onions work right here too.
Forestall your display from going darkish
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Preheat the oven to 400°F. Frivolously 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 mushy, 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 â…“ 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 flippantly browned and crispy. Retailer at room temperature till you are able to assemble the casserole.
Vegan choice: Omit the cheese and add a couple of additional pinches of salt to the mushroom sauce.
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