Side Dishes
This Campbell's green bean casserole recipe with cream of mushroom soup delivers the comforting, creamy layers and crispy fried onion topping that make it a holiday staple.
The secret lies in balancing the rich cream of mushroom soup with tender green beans and a golden, crunchy finish that's impossible to resist. I've perfected this nostalgic dish over years of holiday gatherings, ensuring every bite brings back those warm, familiar flavors.
The beauty of this recipe is its simplicity—just a handful of ingredients come together to create a side dish that's both hearty and elegant.
You'll start with fresh green beans, simmered until tender but still holding their shape, then mix in Campbell's cream of mushroom soup for that signature creamy texture. The real magic happens when you top it with crispy fried onions, baked until golden and crunchy.
What you'll end up with is a casserole that's creamy in the center, crispy on top, and packed with the comforting flavors of childhood holidays. The aroma alone will have everyone gathering around the table, and the first bite delivers that perfect balance of creamy, savory, and crunchy.
This is the kind of dish that transforms a simple dinner into a memorable feast.
Perfect for holiday gatherings, family dinners, or even a cozy weeknight meal, this green bean casserole brings back the warmth of tradition while offering the flexibility to adapt with modern twists. Let's get started on creating this nostalgic classic that never goes out of style.
Ingredients for campbell's green bean casserole recipe with cream of
Just nine ingredients for that nostalgic holiday flavor combo everyone loves.
| Ingredient | Amount | Notes |
|---|---|---|
| Fresh Green Beans 🍃 | 1 ½ lb | Trimmed, ends cut off |
| Campbell's Cream of Mushroom Soup 🍄 | 2 cans | 10.5 oz each, undiluted |
| Milk 🥛 | ½ cup | Whole milk for creaminess |
| Yellow Onion 🧅 | 1 whole | Medium size, diced fine |
| Butter 🧈 | ½ cup | Unsalted, melted |
| Fried Onions 🧅 | 1 cup | Store-bought or homemade |
| Salt 🧂 | 1 tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ½ tsp | Freshly ground preferred |
| Garlic Powder 🧄 | ½ tsp | For subtle garlic flavor |
| All-Purpose Flour 🌾 | 1 tbsp | For thickening if needed |
| Shredded Cheese 🧀 | ½ cup | Optional, cheddar or mozzarella |
The green beans are the star—fresh from the market taste best, but frozen works in a pinch. Look for crisp, bright green beans with no slimy spots. Trader Joe's and Whole Foods usually have the freshest cuts. If you're using frozen, no need to thaw—just drain and pat dry. The cream of mushroom soup is non-negotiable here. Campbell's original gives that perfect creamy texture—don't even think about those powdered soup mixes. They'll ruin the whole dish.
No Campbell's? Homemade mushroom cream sauce works—sauté mushrooms, garlic, and shallots, then blend with milk and butter. Short on milk? Half-and-half or heavy cream keeps it rich. The fried onions can be store-bought (French's is the classic), but homemade is worth the effort—just fry onion slices in butter until crispy. For extra flavor, add a pinch of smoked paprika to the green beans before baking. And if you're feeling fancy, top with that shredded cheese—it melts beautifully into the crispy onions.
This casserole reheats like a dream—just cover with foil and bake at 350°F until warmed through. Keeps 4-5 days in the fridge, freezes for 3 months (though honestly, it disappears faster than that). I always make a double batch—half for Thanksgiving, half for leftovers the next day. The flavor actually gets better after sitting overnight, so plan ahead. Store the fried onions separately if you want to keep them extra crispy.
Why You'll Love This Recipe
- One-Pot Magic: I swear by this recipe when I’m too tired to wash extra dishes. Toss the beans, soup, and milk in one pan—no fussing with multiple bowls or strainers. The onions caramelize right in the butter while you stir, and boom, dinner’s ready.
- Creamy Crunch Combo: That crispy fried onion topping with the velvety mushroom soup? It’s the best of both worlds. The fresh green beans add a snap, but the creamy milk-soup base makes every bite rich and satisfying. I’ll be real—it’s the kind of dish that disappears faster than I can say “seconds?”
- Leftovers for Days: This casserole actually improves the next day. The flavors meld overnight, and reheating it is a breeze—just pop it in the oven or microwave. I make a double batch on Sundays because it’s my go-to for lazy lunches or quick dinners when I’m not in the mood to cook.
- Budget-Friendly Feast: Fresh green beans might sound fancy, but they’re cheaper than you think, especially when you bulk them up with Campbell’s soup and milk. A single can of cream of mushroom gives you that restaurant-quality depth without breaking the bank. Plus, it feeds four for under $10—easy on the wallet, hard on the hunger.
Step-by-step instructions for Campbell's green bean casserole
Here's how to build that perfect mix of crispy fried onions and creamy mushroom sauce.
Blanch and Prepare the Green Beans
Start by trimming the ends off the 1.5 lb of fresh green beans and cutting them into 1-inch pieces. Spread them out on a baking sheet and steam for 5-6 minutes until they turn bright green and are tender but still slightly crisp. Drain well and set aside.
This quick blanching ensures your beans stay vibrant and hold their shape through baking. Overcooking here makes them mushy—you want them to stay slightly firm so they don't turn to mush in the oven. I like to spread them out single-layer so they steam evenly.
Make the Creamy Mushroom Mixture
In a large bowl, combine the 2 cans of Campbell's Cream of Mushroom Soup, 0.5 cup milk, 0.5 cup melted butter, 1 tsp salt, 0.5 tsp black pepper, and 0.5 tsp garlic powder. Stir everything together until smooth. Taste and adjust seasoning if needed—this is your flavor base.
The soup already has a rich, creamy texture from the milk and butter, but if it seems too thin, stir in the 1 tbsp all-purpose flour to thicken it slightly. You want a consistency that coats the back of a spoon but still flows easily. This mixture will become the creamy heart of your casserole.
Assemble the Casserole Layers
In a 9x13-inch baking dish, spread half of the blanched green beans evenly across the bottom. Pour the creamy mushroom mixture over the beans, spreading it out to cover completely. Then add the remaining green beans on top, pressing down gently to help them absorb the sauce.
This layering creates that classic casserole texture—creamy sauce surrounded by tender green beans. Don't skip pressing the beans down slightly; it helps them cook evenly and prevents a watery top layer. The beans should be mostly submerged in the sauce but still visible.
Top with Crispy Fried Onions
Sprinkle the 1 cup of fried onions evenly over the top of the casserole, pressing them down gently so they stick. If using the 0.5 cup shredded cheese, sprinkle it over the fried onions for extra richness. Bake uncovered at 350°F for 40-45 minutes until the top is golden brown and bubbly.
The fried onions are the star here—they should turn deep golden brown and crispy on top. If your oven runs hot, check at the 35-minute mark. The perfect casserole has a crispy, crunchy top that contrasts beautifully with the creamy layers underneath. Let it rest for 10 minutes before serving to let everything set.
Pro Tips For Making Campbell'S Green Bean Casserole Recipe With Cream Of
- BLANCH BEANS FIRST: After snapping those ends, drop fresh green beans into boiling water for exactly 2 minutes—no more. Overcooking turns them mushy, and you’ll end up with a sad, watery casserole instead of crisp-tender beans that hold their shape. Drain and shock in ice water immediately to stop cooking.
- SAUTE ONIONS LOW AND SLOW: Skip the high heat—it burns before the onion softens. Cook the diced yellow onion in butter over medium-low for 8-10 minutes until golden and translucent. This builds flavor without bitterness, and you won’t taste raw onion in the final dish.
- STIR THE SOUP MIX: Once you add the Campbell’s Cream of Mushroom to the warm milk, give it a good stir before pouring it over the beans. The soup thickens unevenly, and you’ll end up with clumpy spots if you just dump it straight in. A whisk or wooden spoon for 20 seconds smooths it out perfectly.
- TOAST THE TOPPING: If you’re using fried onions (because let’s be real, we all are), crisp them in a dry skillet over medium heat until they’re golden and smell amazing. The extra effort makes the topping irresistible—no soggy, sad onions here. Sprinkle them right before baking so they stay crispy.
Essential equipment for perfect results
Baking Dish Essentials
Start with a 9x13-inch baking dish—this is the gold standard for even heat distribution and proper layering. I swear by CorningWare or CeramicStone dishes because they handle high heat without warping.
Avoid glass dishes that are thinner than ¼ inch—they can crack under the weight of fried onions and hot filling. 🔥
Onion Fryer Tools
For homemade fried onions, a deep skillet (like All-Clad Stainless Steel) or cast iron skillet works best. Use a wire rack over a baking sheet to drain excess oil—this keeps onions crispy.
A slotted spoon helps lift fried onions without crushing them. I also keep paper towels nearby to blot any excess grease before topping the casserole.
Mixing & Measuring
Use a large mixing bowl (at least 3-quart capacity) to combine the cream of mushroom mixture. A whisk ensures smooth consistency, and a measuring cup set guarantees accurate milk and butter ratios.
For the green beans, a sharp chef's knife and cutting board are essential—trim ends cleanly to avoid stringy bits. 💡
Oven Thermometer
Ovens run hot or cold, and this casserole demands 350°F precision. I always use a Thermoworks Oven Thermometer to verify accuracy. A digital probe thermometer (like Meater) can also monitor internal temp—aim for 165°F in the center for food safety. This is especially critical if you're serving leftovers.
Optional Crispy Top Tools
Want extra-crispy fried onions? Try a mandoline slicer for even ⅛-inch slices that fry perfectly. For the cheese topping, a microplane creates finer shreds that melt smoothly. A pizza stone in your oven can also help achieve that restaurant-style crispiness on the bottom layer.
Nutrition facts
Frequently asked questions
Can I use frozen green beans instead of fresh?
Frozen green beans work perfectly—they're pre-trimmed and save time. Just thaw and drain them completely before mixing with the cream of mushroom sauce. For best texture, pat them very dry with a paper towel to prevent a watery casserole.
Why does my casserole come out watery?
Watery casseroles usually happen from over-blanching beans or not draining them well. Always steam fresh beans for just 5-6 minutes and drain thoroughly. For frozen beans, squeeze out all excess moisture. If the mixture still seems thin, stir in 1 tbsp flour or let it rest uncovered in the fridge for 30 minutes before baking to thicken naturally.
Can I make this ahead of time?
This casserole actually tastes better the next day! Assemble it up to 24 hours ahead and refrigerate uncovered. Let it sit at room temperature for 30 minutes before baking to even out temperatures. For make-ahead baking, cover tightly with foil and bake at 350°F for 50-55 minutes (the extra time compensates for cold ingredients).
What's the best way to reheat leftovers?
Cover with foil and reheat at 350°F for 20-25 minutes until warmed through. For crispy fried onions, broil for 2-3 minutes at the end. Microwaving works in a pinch (3-4 minutes covered), but the texture suffers. Pro tip: Store fried onions separately if you want to keep them extra crispy when reheating.
Can I substitute cream of mushroom soup?
For authentic flavor, stick with Campbell's original cream of mushroom soup. As a substitute, try homemade mushroom cream sauce (sauté mushrooms, garlic, and shallots, then blend with milk and butter) or even cream of celery soup for a lighter version. Just remember—powdered soup mixes won't give the same creamy texture.