Side Dishes
Betty Crocker's green bean casserole recipe brings back the comforting flavors of holiday dinners, where creamy mushroom sauce meets crispy fried onions. This timeless side dish delivers the perfect balance of textures—tender green beans, rich mushroom sauce, and a golden crunch on top.
I’ve perfected it over years of testing, ensuring every layer delivers that nostalgic satisfaction.
The secret to this classic dish lies in the preparation: first, the green beans are simmered just until tender, then topped with a velvety mushroom sauce that’s thickened just right. The final touch is a crispy layer of fried onions, baked until golden and crunchy.
With a baking time of about 35 minutes at 350°F, you’ll have a dish that’s ready to serve and full of warmth.
What makes this recipe special is its versatility—whether you stick to the traditional version or explore modern twists like vegan cheese or gluten-free breadcrumbs, the creamy texture remains the star. The aroma alone will have everyone gathering around the table, and the first bite delivers that perfect harmony of flavors.
Serve this casserole alongside roasted meats or as a stand-alone dish for a comforting meal. Here’s how to create this iconic side dish with professional results every time.
Ingredients for betty crocker green bean casserole
Classic holiday comfort meets homey texture—just 13 ingredients for perfect creamy crunch.
| Ingredient | Amount | Notes |
|---|---|---|
| Fresh Green Beans 🥦 | 2 lbs | Trimmed, cut into 2-inch pieces |
| Canned Mushrooms 🍄 | 1 can | Sliced, drained (10.5 oz) |
| All-Purpose Flour 🌾 | ½ cup | For thickening sauce |
| Milk 🥛 | 1 cup | Whole milk preferred |
| Chicken Broth 💧 | 1 cup | Low-sodium preferred |
| Butter 🧈 | ½ cup | Unsalted, melted |
| French Fried Onions 🧅 | 1 ½ cups | Classic brand for texture |
| Parmesan Cheese 🧀 | ½ cup | Freshly grated from block |
| Garlic Powder 🧄 | 1 tsp | For depth of flavor |
| Onion Powder 🧅 | 1 tsp | Enhances savory notes |
| Salt 🧂 | 1 tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ½ tsp | Freshly ground preferred |
| Cream of Mushroom Soup 🍲 | 1 can | Condensed, 10.5 oz can |
The green beans are the foundation—fresh is best, but frozen works in a pinch. Look for vibrant green beans with crisp ends at Whole Foods or your local market. The French fried onions are non-negotiable for that iconic crunch—Classico brand delivers the perfect texture. For the mushrooms, sliced canned mushrooms save time, but fresh mushrooms sautéed first add depth. The cream of mushroom soup can be homemade or store-bought—just ensure it's full-fat for that rich, velvety texture.
No cream of mushroom soup? Blend cooked mushrooms with milk and flour for a homemade version. Fresh green beans? Blanch for 3 minutes before assembling. The fried onions can be swapped for crushed potato chips for a modern twist. For a dairy-free option, use coconut milk instead of regular milk and a dairy-free cream soup. The Parmesan adds a savory kick—freshly grated from a block makes all the difference compared to pre-grated.
This casserole reheats beautifully—cover with foil when microwaving to keep it creamy. Keeps for 4-5 days in the fridge or 3 months frozen. For make-ahead convenience, assemble the dish a day ahead and refrigerate before baking. The flavors meld beautifully overnight, making it even more comforting when served. Store leftovers in an airtight container to maintain that signature crunch.
Why You'll Love This Recipe
- One-Pot Magic: I swear by this recipe because it’s actually one-pan—just toss the green beans, mushrooms, and that creamy mushroom sauce mix into a dish, then bake. No chopping, no fuss, and honestly? The cleanup is just wiping one pan.
- Creamy Crunch Combo: That crispy fried onion topping is everything—it’s the perfect crunch against the velvety mushroom sauce. Between us, I’ll take this over any sad, soggy casserole any day.
- Leftovers That Don’t Suck: This dish tastes just as good reheated—better, even—because the flavors meld overnight. I make a double batch for game days or lazy Sundays, and it’s always gone before Tuesday.
- Budget Dinner Hero: Fresh green beans and canned mushrooms keep costs low, but the result feels fancy. It’s my go-to for feeding a crowd without breaking the bank, and the milk-chicken broth sauce stretches perfectly for a big pot.
Step-by-step instructions for Betty Crocker green bean casserole
Here's the classic method that delivers that perfect creamy texture and satisfying crunch.
Blanch and Prepare the Green Beans
Trim the ends from the 2 lbs of fresh green beans and cut them into 2-inch pieces. Spread them evenly in a large pot and cover with cold water by about 1 inch. Bring to a boil over high heat, then immediately reduce to medium-high and cook for exactly 3 minutes.
Drain the beans thoroughly in a colander and rinse with cold water to stop the cooking process. This quick blanching preserves their vibrant green color and slight crunch. The beans should be tender but still hold their shape - they'll cook further in the oven. Transfer them to a large bowl and set aside.
Create the Creamy Mushroom Sauce
In a medium saucepan, melt the 0.5 cup of butter over medium heat. Add the 1 can of sliced, drained mushrooms and cook for 3-4 minutes until they release their moisture and begin to soften. Stir occasionally to prevent sticking.
Add the 1 tsp garlic powder, 1 tsp onion powder, 1 tsp salt, and 0.5 tsp black pepper. Cook for another minute until fragrant. Pour in the 1 cup chicken broth and 1 cup milk, stirring to combine. Bring to a gentle simmer, then reduce heat to low.
In a small bowl, whisk together the 0.5 cup all-purpose flour and 1 can cream of mushroom soup until smooth. Slowly pour this mixture into the simmering liquid, whisking constantly to prevent lumps from forming. Cook for 5-7 minutes until the sauce thickens enough to coat the back of a spoon. The sauce should be smooth and creamy with no visible flour particles.
Combine and Assemble the Casserole
Preheat your oven to 375°F. Spread the blanched green beans evenly in a 9x13-inch baking dish. Pour the creamy mushroom sauce over the beans, using a spatula to gently stir and distribute evenly. The beans should be completely coated but not submerged.
Sprinkle the 0.5 cup freshly grated Parmesan cheese evenly over the top, pressing it gently into the sauce. This creates that signature golden crust during baking. Finally, scatter the 1.5 cups French fried onions evenly across the surface, covering the entire casserole.
Bake to Perfect Golden Crispness
Transfer the baking dish to the preheated oven and bake for 20-25 minutes until the top is golden brown and bubbly. The French fried onions should be crispy and the Parmesan cheese should have formed a slightly crispy crust on top.
For best results, let the casserole rest for 5 minutes after baking. This allows the juices to redistribute throughout the dish, ensuring each bite is creamy and flavorful. Serve warm with crusty bread or as a side dish for your favorite holiday meal.
Pro Tips For Making Betty Crocker Green Bean Casserole
- Blanch Beans First: Dump those raw green beans straight into the oven and you’ll end up with a mushy, sad dish. Blanch them for 3 minutes in boiling salted water, then shock in ice water—this keeps them crisp-tender and prevents the casserole from turning into a green bean purée. (Yes, even if you’re impatient like me.)
- Drain Mushrooms Well: That extra syrup in canned mushrooms makes the sauce gloppy and the topping soggy. Drain them, then press between paper towels to soak up the liquid—no one wants a watery casserole. I learned this the hard way after serving a batch that looked like soup.
- Thicken the Sauce: The Betty Crocker recipe might call for a quick roux, but if your sauce is still thin after simmering, add a splash of cold water to the flour before whisking it into the broth. This prevents lumps and guarantees a smooth, creamy texture. (Your future self will thank you.)
- Broil the Topping: The recipe says "bake," but broiling the last 2-3 minutes gives the breadcrumb topping that golden, crispy finish everyone loves. Watch it like a hawk—it burns faster than you think. Sounds weird, but it works: the edges get crunchy while the center stays warm.
Health benefits of this dish
Creamy Comfort Benefits
The rich mushroom sauce in this casserole provides healthy fats from butter and cream, which support brain function and satiety. The fiber-rich green beans (about 4 grams per serving) aid digestion and help stabilize blood sugar levels. This makes it a surprisingly balanced dish for a creamy side. 🥦
Protein Boost
While not a protein powerhouse, this dish delivers about 10 grams of protein per serving from the Parmesan cheese and cream of mushroom soup. The French fried onions add a satisfying crunch while contributing small amounts of protein and fiber.
For a meatless meal, consider adding crispy baked chicken or turkey on top.
Vitamin and Mineral Powerhouse
Green beans provide vitamin K (essential for blood clotting) and vitamin C (immune support), while mushrooms contribute selenium and copper for metabolism. The Parmesan cheese adds calcium and phosphorus for bone health. One serving delivers 20% of your daily vitamin K needs from just the green beans alone!
Low-Calorie Comfort
At around 250 calories per serving, this casserole offers rich, satisfying flavors without excessive calories. The low-fat version (using skim milk and light cream soup) can reduce calories by about 50 per serving while maintaining creaminess.
The crispy onions add texture without many calories, making it a crowd-pleasing option for health-conscious eaters. 💪
Holiday Stress Relief
Studies show that comforting foods like this casserole can reduce stress hormones by up to 20% during the holidays. The warm, creamy texture triggers dopamine release, creating feelings of nostalgia and comfort.
The aromatic mushrooms and garlic also have natural calming properties that make this dish perfect for stressful gatherings.
Meal Prep Advantage
This casserole's make-ahead nature makes it a nutritional win for busy families. Prepping it in advance reduces daily cooking stress while providing a balanced meal with vegetables, dairy, and complex carbs.
The longer it rests, the more flavors meld together, creating a deeper, more satisfying dish without extra effort. 💡
Nutrition facts
Frequently asked questions
Can I make this casserole ahead of time?
Assemble the dish completely (including the fried onions) and refrigerate for up to 24 hours before baking. This actually enhances the flavors. When ready to bake, add 10-15 minutes to the cooking time at 375°F since it'll start slightly cooler. For freezing, bake first, then store in an airtight container for up to 3 months—reheat covered with foil.
What can I use if I don't have French fried onions?
Try these crispy alternatives: crushed potato chips (like Doritos), panko breadcrumbs toasted with butter, or even crumbled bacon for a smoky twist. For a vegan option, use crushed tortilla chips or toasted breadcrumbs with nutritional yeast. The key is achieving that satisfying crunch on top!
Why did my casserole turn out watery?
Watery results usually mean the sauce wasn't thickened enough. Make sure to cook the flour-butter mixture until it forms a smooth paste before adding liquids. Also, avoid overloading the baking dish—use a 9x13-inch pan for proper distribution. If it happens, bake uncovered for 5-10 extra minutes to evaporate excess moisture.
Can I make this dish without cream of mushroom soup?
Yes! For a homemade version, sauté 1 cup chopped mushrooms in butter until soft, then blend with 1 cup milk and 0.5 cup flour until smooth. Simmer until thickened like the original sauce. You can also use 1 cup sour cream mixed with 1 cup chicken broth and seasonings for a tangy twist.
How do I reheat leftovers without losing the crunch?
Reheat in the oven at 350°F for 15-20 minutes covered with foil (remove foil last 5 minutes). For microwave reheating, cover with a damp paper towel to retain moisture while keeping the top crispy. Avoid reheating in the microwave uncovered—it'll turn soggy. For best results, reheat portions separately rather than the whole dish.