Classic Comfort Food
The Best Green Bean Casserole Recipe From Scratch
Creamy mushroom sauce, tender-crisp beans, golden crispy onions. No canned soup — just pure, cozy comfort food the whole family will request every year.
Green bean casserole is the dish that turns any dinner table into a holiday gathering. This from-scratch version skips the canned condensed soup entirely and builds a rich, velvety mushroom cream sauce that tastes like something your grandmother would have spent all afternoon on — except it comes together in under 45 minutes.
Why you’ll love this recipe
This is not your average potluck casserole. Blanching the beans before baking keeps them bright and snappy — never mushy. The from-scratch mushroom sauce is built on a proper butter-and-flour roux, giving it body and depth that no can of soup can replicate. And that crispy onion topping? Added in the final minutes of baking so it stays shatteringly crunchy all the way to the table.
Ingredients
Step-by-step instructions
Blanch the beans. Bring a large pot of heavily salted water to a boil. Add the trimmed beans and cook for exactly 5 minutes — bright green and barely tender. Immediately transfer to a bowl of ice water to stop the cooking. Drain and pat completely dry.
Build the mushroom sauce. Preheat oven to 375°F (190°C). Melt butter in a large oven-safe skillet over medium heat. Add garlic and cook 30 seconds. Add mushrooms and cook 6–8 minutes until golden brown.
Make the roux. Sprinkle flour over the mushrooms and stir constantly for 1–2 minutes. The mixture will look thick and pasty — that is exactly right.
Add the liquids. Gradually whisk in the broth, then add the cream and soy sauce. Simmer 3–4 minutes, stirring often, until the sauce coats the back of a spoon. Season with salt and plenty of black pepper.
Assemble. Toss the blanched beans with the sauce in the skillet or transfer to a 9×13 baking dish. Spread evenly.
Bake. Bake uncovered for 20 minutes. Scatter fried onions over the top and bake another 8–10 minutes until onions are deep golden and the sauce is bubbling. Rest 5 minutes before serving.
Pro tips for the best result
Delicious variations to try
Nutrition per serving (approx.)
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