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BA's Best Green Bean Casserole
This easy recipe offers a slight update to the classic green bean casserole with fresh mushrooms and a Parmesan béchamel. Don't worry, we kept the fried onions.
👥 8 Servings⏱️ Prep & Cook: 1h 35m🔥 Cook: 30 min👤 Chris Morocco📖 epicurious
🥘 Ingredients
Check off ingredients as you prepare them:
🍳 Cookware
- ●pot
- ●oven
- ●pan
- ●skillet
- ●saucepan
- ●whisk
- ●baking dish
📝 Preparation Steps
1
Preheat oven to 375°. Working in batches, cook green beans in a large pot of boiling salted water until bright green and halfway to tenderness, about ⏱️ 3 minutes per batch. Drain and let cool; trim stem ends.
2
Heat 1 Tbsp. oil in a large skillet over medium-high. Cook half of mushrooms, without stirring, until golden brown underneath, about ⏱️ 2 minutes. Toss and continue to cook, tossing occasionally, until browned on both sides, about ⏱️ 3 minutes more. Add 2 Tbsp. butter and 2 thyme sprigs to pan. Cook, tossing occasionally, until butter browns and mushrooms are dark brown and very tender, about ⏱️ 4 minutes longer. Season with salt and transfer to a plate. Repeat with 2 Tbsp. butter, salt, and remaining oil, mushrooms, and thyme.
3
Melt remaining 2 Tbsp. butter in a large saucepan over medium-low. Whisk in flour and cook, whisking occasionally, until roux is golden brown and smells mildly nutty, about ⏱️ 4 minutes. Whisk in milk and cream. Increase heat and bring to a simmer, whisking often, and cook until béchamel sauce is thick and bubbling, about ⏱️ 5 minutes. Remove from heat and whisk in garlic and Parmesan; season with salt and pepper.
4
Arrange green beans and mushrooms in a 2-qt. baking dish. Pour sauce over (it may not look like enough, but it will get saucier as it bakes). Cover tightly with foil and bake until sauce is bubbling, 25–⏱️ 30 minutes. Uncover and continue to bake until casserole is lightly browned on top and around the edges, 15–⏱️ 20 minutes longer. Top with fried onions and continue to bake just until onions are slightly darker and fragrant, about ⏱️ 3 minutes. Let sit ⏱️ 10 minutes to set before serving. Editor’s note: This recipe was originally published in November 2016. Head this way for more of our best Thanksgiving recipes →
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