Creamy Garlic & Thyme Green Bean Casserole

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When the air turns crisp and you’re seeking a familiar dish that warms from the inside out, it’s hard to beat a classic green bean casserole. This recipe brings together fresh green beans, savory mushrooms, and a creamy garlic-thyme sauce beneath a crunchy top. It’s the perfect side to serve on cool afternoons or during holiday gatherings.

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Ingredients

  • 1 pound fresh green beans, trimmed and cut into 2-inch pieces
  • 2 tablespoons butter
  • 1 small onion, finely diced
  • 8 ounces mushrooms, sliced
  • 2 cloves garlic, minced
  • 1 teaspoon dried thyme
  • 1 can (10.5 ounces) condensed cream of mushroom soup
  • ½ cup milk (or half-and-half for extra creaminess)
  • Salt and pepper to taste
  • 1 cup crispy fried onions
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Instructions

Begin by blanching the green beans. Bring a pot of salted water to a boil, add the beans, and cook for about 4 minutes. Drain them immediately and rinse with cold water to halt the cooking process. This ensures your beans stay bright and crisp.

Meanwhile, warm the butter in a skillet over medium heat. Stir in the onions and mushrooms, cooking until the onions are translucent and the mushrooms release their juices, about 5 minutes. Then toss in the garlic and thyme, stirring for another minute. Sprinkle in a pinch of salt and pepper.

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Lower the heat and pour in the condensed cream of mushroom soup and milk. Stir everything gently until it combines into a luscious sauce. Add the green beans to the skillet and carefully fold them into the sauce, ensuring each piece is coated.

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Transfer this mixture to a casserole dish and bake at 350°F (175°C) for about 20 minutes. Then, top with crispy fried onions and pop it back in the oven for another 5 minutes, or until the onions are golden and the casserole is bubbling around the edges.

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This creamy green bean casserole is an unfussy yet crowd-pleasing dish perfect for holiday feasts or a simple weeknight treat. It’s especially great for anyone craving homey flavors without a lot of fuss. If you’re looking to lighten it up, use low-sodium or reduced-fat soup and milk. For a vegetarian version, check labels or opt for a veggie-friendly “cream of” soup. Feel free to add a dash of paprika or swap thyme for rosemary to switch up the flavor. However you serve it, this baked beauty brings warmth and coziness to any table.

Nathaniel Lee is an avid cook, drawing on his decades of home cooking and fine dining experience. He is a contributing chef at Mashed, and his recipes and contributions have been featured in Tasting Table, Edible Arrangements, Insanely Good Recipes, and The Daily Meal.