How to Make the Perfect Classic Creamy Green Bean Casserole
American · Medium · 60 min · 8 servings
This timeless holiday casserole features tender green beans smothered in a rich homemade mushroom cream sauce. It is topped with crispy fried onions for a satisfying crunch that everyone loves.
Why this recipe works
This Classic Creamy Green Bean Casserole recipe has been crafted to deliver restaurant-quality results in your home kitchen. At just 60 minutes from start to finish, it fits perfectly into a busy schedule without sacrificing flavor. Each serving comes in at 210 calories with 5g of protein, making it a balanced choice for any meal.
What you will need
This recipe uses 6 simple ingredients that you can find at any grocery store:
- 1.5 lbs fresh green beans trimmed and blanched
- 2 cups cremini mushrooms sliced
- 1.5 cups heavy cream
- 2 tbsp unsalted butter
- 1.5 cups crispy fried onions
- 2 cloves garlic minced
Step by step instructions
Step 1: Blanch the Green Beans
Bring a large pot of salted water to a boil. Add the trimmed green beans and cook for exactly 5 minutes until bright green and tender-crisp. Immediately transfer them to a bowl of ice water to stop the cooking process, then drain and pat dry.
Step 2: Make the Mushroom Cream Sauce
Melt butter in a large oven-safe skillet over medium-high heat. Add the sliced mushrooms and cook for 6 to 8 minutes until deeply browned. Add the garlic and cook for 1 more minute, then pour in the heavy cream and simmer until the sauce thickens slightly, about 5 minutes.
Step 3: Assemble the Casserole
Preheat your oven to 375 degrees Fahrenheit. Add the blanched green beans to the skillet with the mushroom cream sauce and stir to combine. Transfer to a greased 9x13 baking dish if not using an oven-safe skillet. Top with three quarters of the crispy fried onions.
Step 4: Bake and Finish
Bake uncovered for 20 to 25 minutes until the sauce is bubbling around the edges. Remove from the oven and immediately scatter the remaining crispy fried onions over the top. Let it rest for 5 minutes before serving so the sauce can settle slightly.
Easy substitutions
Missing an ingredient? Here are some swaps that work perfectly:
- heavy cream → half-and-half for a lighter sauce
- fresh green beans → frozen green beans thawed and dried
Common mistakes to avoid
Watch out for these pitfalls that can affect your results:
- Not blanching the green beans first which results in underdone vegetables
- Adding all the fried onions before baking which makes them soggy
Nutrition facts
Per serving: 210 calories, 5g protein, 22g carbs, 12g fat, 3g fiber.
Ready to cook?
Get the interactive recipe with adjustable servings, built-in timers, and ingredient checklist.
View full recipe →