Creamy Greek Yogurt Green Bean Casserole

This Greek yogurt green bean casserole uses fresh beans, mushrooms and a simple milk sauce instead of condensed soup. The yogurt goes in off the heat, with Parmesan and a breadcrumb topping to keep the dish familiar. It is a creamy holiday vegetable side with some added protein, not a replacement for the turkey or another main dish.

Why Greek yogurt green bean casserole works

Cooking the mushrooms before building the sauce gives their moisture time to evaporate. A small amount of flour thickens the milk, which helps the sauce coat the beans. Yogurt adds tang and protein after the pan comes off the heat. Parmesan supplies savory flavor, and the buttered crumbs give the top a little crunch.

This method avoids a large amount of heavy cream, but it does not promise an identical texture to canned-soup casserole. Greek yogurt can become slightly grainy when heated, especially if it boils hard. Thick yogurt, a lightly thickened sauce and gentle heating give it a better chance of staying creamy. A little visible texture is not a sign that the beans are unsafe.

Choosing beans, mushrooms and yogurt

Trim the green beans before weighing the edible amount, then cut into pieces that are easy to scoop. Fresh beans are intended for the short blanch in the card. Frozen beans can release more water and may be softer; cook according to their package, drain well and expect a different texture. Canned beans are already cooked and will be much softer.

Use plain Greek yogurt and ordinary white or cremini mushrooms. Flavored yogurt is not appropriate, and regular thin yogurt can loosen the sauce. The estimate uses nonfat yogurt. A higher-fat version changes the macros and can still separate if overheated. Fine dry breadcrumbs are the topping here; fried onions are an optional separate addition rather than an ingredient included in the numbers.

Tips for Greek yogurt green bean casserole

Drain the beans well after blanching. Excess water goes straight into the sauce and can make the casserole soupy. Let the mushrooms cook until the skillet is no longer full of released liquid, then add the flour. Stirring the flour for a minute before adding milk helps keep the finished sauce from tasting raw.

Take the pan off the heat before adding yogurt. Warming the yogurt with a little sauce first softens the temperature change, though it cannot guarantee no separation. Bake until the center is hot enough, rather than extending the time just to darken the crumbs. Follow safe cooking temperature guidance for the 165°F reheating target. Times are estimates; this recipe has not been kitchen-tested.

Creamy Greek Yogurt Green Bean Casserole

This Greek yogurt green bean casserole uses fresh beans, mushrooms and a simple milk sauce instead of condensed soup.

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Prep Time 20 minutes mins

Cook Time 40 minutes mins

Total Time 1 hour hr

Course Side Dish

Cuisine American

Servings 6 equal side portions, about 1 cup

Calories 217 kcal

Ingredients

  

• 1 1/2 lb fresh green beans trimmed edible weight; cut into 2-inch pieces
• 8 oz white mushrooms sliced
• 1 small yellow onion diced
• 2 cloves garlic minced
• 1 tbsp olive oil
• 2 tbsp all-purpose flour
• 1 cup 2% milk
• 1 1/2 cups plain nonfat Greek yogurt
• 1/2 cup Parmesan, finely grated divided
• 1/2 cup plain dry breadcrumbs
• 1 tbsp unsalted butter melted
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1 tbsp fresh parsley chopped

Instructions

 

• Heat oven to 350°F. Bring a large pot of water to a boil. Cook trimmed green beans for about 5 minutes until bright green and just tender, then drain very well.
• Heat olive oil in a large skillet over medium heat. Cook onion and mushrooms for 7–9 minutes until softened and most mushroom liquid evaporates. Stir in garlic for 30 seconds. Sprinkle flour over vegetables and stir for 1 minute.
• Slowly whisk in milk. Simmer gently for about 2–3 minutes, stirring until lightly thickened. Remove from heat. Whisk a few spoonfuls of warm sauce into the yogurt in a bowl, then gently stir that yogurt back into the skillet with salt, pepper and half the Parmesan. Do not boil.
• Fold in drained beans and transfer to a 2-quart baking dish. Mix breadcrumbs, melted butter and remaining Parmesan; sprinkle over the top. Bake about 20–25 minutes until the center reaches 165°F and the topping is lightly golden. Scatter parsley over the top and divide into 6 equal portions.
• Serve promptly or hold at or above 140°F. Refrigerate in shallow containers within 2 hours (1 hour above 90°F). Keep at 40°F or below for 3–4 days and reheat covered to 165°F.

Notes

This is a creamy vegetable side with extra protein from dairy, not a main-dish protein source. Contains milk and wheat. Yogurt may show slight graininess after heating; gentle heat helps but does not guarantee a perfectly smooth sauce. No canned condensed soup or fried onions are included. Cooking times are estimates; this recipe has not been kitchen-tested.

Keyword greek yogurt green bean casserole

Make-ahead and leftover plan

For the best topping texture, prepare the beans and mushroom sauce a day ahead, refrigerate them separately and finish assembly before baking. Keep the crumbs dry until they go on top. You can also assemble the whole dish ahead, but the crumbs soften as they absorb moisture and a cold casserole takes longer to heat.

Cool leftovers promptly in shallow portions and refrigerate at 40°F or below. Use within three to four days. Reheat covered until the middle reaches 165°F, then uncover briefly if you want the topping drier. Avoid repeated reheating of the entire batch; warm only what you plan to serve. See our meal-prep guide for more storage ideas.

Serving and nutrition guidance

Serve alongside roast turkey breast and potatoes for a familiar Christmas dinner. One-sixth of the dish is a side portion. The dairy contributes protein, but this is still primarily a vegetable casserole. Guests who want more protein should look to the main dish rather than assuming every side supplies a full meal’s worth.

Keep hot food at or above 140°F. If it is sitting at room temperature, refrigerate within two hours, or one hour above 90°F. The nutrition estimate includes all crumbs and butter, while blanching-water losses are not measured. Read our nutrition-estimate guide for limitations. The original featured image is AI-generated and does not represent an owner-tested batch.