Side Dishes
This McCormick green bean casserole recipe brings back the nostalgic comfort of 1950s home cooking with its signature creamy mushroom sauce and crispy fried onion topping.
The combination of tender green beans, rich sauce, and crunchy onions creates a dish that’s both hearty and satisfying—perfect for holiday tables or cozy weeknight dinners. I’ve perfected this classic recipe while keeping it approachable for modern kitchens, ensuring every bite delivers that familiar, comforting crunch.
The beauty of this casserole lies in its simplicity and versatility. With just a handful of pantry staples—fresh green beans, cream of mushroom soup, milk, and a few key seasonings—you can create a dish that tastes like it’s been simmering for hours.
The secret to that creamy texture lies in balancing the soup with milk and a touch of cornstarch, while the fried onions add the iconic crunch that makes this casserole unforgettable. It’s a dish that’s as much about nostalgia as it is about flavor.
What you’ll end up with is a golden, bubbling casserole that’s creamy in the center and crispy on top, with green beans that stay tender and flavorful.
The aroma alone will have everyone gathering around the table, and the first bite will remind them why this dish has been a holiday staple for decades. Whether you’re serving it at Thanksgiving or a casual family dinner, this recipe delivers the comfort of tradition with a modern twist.
For those looking to adapt this classic, I’ll share tips for gluten-free or low-carb versions that keep the essence of the dish intact. The instructions are designed to be foolproof, so even if you’re new to baking casseroles, you’ll achieve restaurant-quality results.
Let’s get started on this timeless dish that brings warmth to any meal.
Ingredients for mccormick green bean casserole
Pantry staples and a few fresh ingredients—this retro casserole delivers pure 1950s comfort.
| Ingredient | Amount | Notes |
|---|---|---|
| Fresh Green Beans 🥦 | 1 ½ lb | Trimmed and cut into 1-inch pieces |
| Cream of Mushroom Soup 🍄 | 2 cans | Condensed, 10.5 oz each, McCormick brand |
| Whole Milk 🥛 | ½ cup | Full-fat for creaminess |
| All-Purpose Flour 🌾 | 2 tbsp | For thickening sauce |
| Yellow Onion 🧅 | 1 whole | Medium size, diced |
| Garlic Cloves 🧄 | 2 cloves | Minced for flavor |
| Butter 🧈 | ½ cup | Unsalted, melted |
| Fried Onions 🧅 | 1 cup | Store-bought or homemade |
| Salt 🧂 | ½ tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ¼ tsp | Freshly ground preferred |
| Ground Black Pepper 🌶️ | ¼ tsp | For garnish |
| Parmesan Cheese 🧀 | ¼ cup | Freshly grated, for topping |
The green beans are the star, so grab fresh or frozen—just make sure they're tender-crisp, not mushy. I always go with Trader Joe's fresh green beans when I can, but frozen works in a pinch (no thawing needed). The McCormick cream of mushroom soup is non-negotiable here—it's the soul of this dish. For the onions, diced yourself gives better flavor than pre-chopped, but if you're short on time, the canned stuff from Vlasic works fine. The Parmesan? Freshly grated makes all the difference—pre-grated tastes like sawdust in comparison.
No cream of mushroom soup? Homemade mushroom sauce (blend sautéed mushrooms, milk, and a splash of cream) works beautifully. Short on fried onions? Toasted breadcrumbs with a pinch of garlic powder mimics the crunch. The flour is just for thickening—if you're gluten-free, cornstarch works 1:1. For extra richness, add a splash of heavy cream> to the sauce. And trust me on the full-fat milk**>—it makes that sauce velvety smooth.
This casserole reheats like a dream—just cover with foil and bake at 350°F for 20 minutes. Keeps 3-4 days> in the fridge, freezes for up to 3 months>. I always make a double batch—half goes in the freezer for lazy weeknights. The fried onions on top? Add them fresh after baking so they stay crispy. Leftovers? Even better the next day—everything melds into perfect comfort food.
Why You'll Love This Recipe
- Here’s what sold me: that textural contrast—the tender green beans swimming in velvety mushroom sauce, then the crispy, golden flour topping that shatters like a dream. (Yes, even on a Tuesday night.) The McCormick soup does the heavy lifting, so you don’t have to.
- One-Pot Magic: I swear by this recipe because it’s actually one-pan—no fussing with multiple dishes. Just toss the green beans, sautéed onions, and that creamy mushroom soup mix, then top it with the buttery flour crust. Five minutes later, dinner’s ready while I’m still wiping my hands.
- Creamy Crisp Perfection: Here’s what sold me: that textural contrast—the tender green beans swimming in velvety mushroom sauce, then the crispy, golden flour topping that shatters like a dream. (Yes, even on a Tuesday night.) The McCormick soup does the heavy lifting, so you don’t have to.
- Holiday Table Star: Between us, this is my go-to for Thanksgiving leftovers and casual Sunday suppers. The flavors hold up for days, and it’s the kind of dish that makes people sigh before they even take a bite. Serve it warm or cold—it’s equally welcome at potlucks or packed in lunches.
Step-by-step instructions for McCormick green bean casserole
Here's how to make this nostalgic comfort dish with a velvety sauce and perfect crunch.
Prepare the Green Beans and Sauté the Aromatics
Trim the ends from the 1.5 pounds of fresh green beans and cut them into 1-inch pieces. Spread them on a baking sheet and steam for 5 minutes until just tender but still bright green - they should still have a slight bite. While they steam, heat 2 tablespoons of the melted butter in a large skillet over medium heat.
Add the diced yellow onion and minced garlic cloves, cooking for 3-4 minutes until the onion becomes translucent and the garlic releases its fragrant aroma. You'll know it's ready when the onions soften and the garlic no longer looks raw. Remove the skillet from heat and set aside for now.
Make the Creamy Sauce Mixture
In a large mixing bowl, combine the 2 cans of cream of mushroom soup, 0.5 cup of whole milk, and 2 tablespoons of all-purpose flour. Whisk everything together until smooth and no flour lumps remain. This will form the creamy base for your casserole.
Add the sautéed onion and garlic mixture to the soup mixture, along with 0.5 teaspoon of salt and 0.25 teaspoon of black pepper. Stir well to combine all ingredients thoroughly. The mixture should be thick but still pourable. Taste and adjust seasoning if needed - you want it to be rich and savory, but not overly salty.
Combine and Assemble the Casserole
Drain the steamed green beans and add them to the soup mixture in the mixing bowl. Gently fold everything together until the green beans are evenly coated in the creamy sauce. Transfer the mixture to a greased 9x13-inch baking dish and spread it out evenly.
Dot the top with the remaining 0.375 cups of melted butter, spreading it evenly across the surface. This will create a golden crust when baked. Sprinkle the 1 cup of fried onions evenly over the top, pressing them down gently so they stick. Finally, scatter the 0.25 cup of freshly grated parmesan cheese evenly across the fried onions.
Bake to Golden Perfection
Preheat your oven to 350°F. Place the baking dish on the middle rack and bake for 30-35 minutes until the top is golden brown and bubbly. You'll know it's done when the fried onions are crispy and the edges of the casserole pull away slightly from the sides of the baking dish.
Let the casserole rest for 10 minutes before serving. This resting time allows the sauce to thicken slightly and the flavors to meld together. Serve warm with a sprinkle of ground black pepper on top for that classic touch. The creamy sauce should coat each green bean perfectly, creating that signature 1950s-style texture you're craving.
Pro Tips For Making Mccormick Green Bean Casserole
- Blanch Beans First: Toss fresh green beans in boiling water for 3-4 minutes before draining and patting them dry—this softens them just enough to absorb the creamy sauce without turning mushy. I learned this the hard way when my beans stayed crunchy and sad after baking, no matter how long I cooked them.
- Toast the Flour: Dry-toast the flour in a pan over medium heat for 2-3 minutes before mixing it into the milk and soup—this removes the raw taste and adds a subtle nutty depth. Sounds weird, but it works: the topping won’t taste like floury cardboard anymore.
- Don’t Overmix the Topping: Stir the flour-milk mixture just until smooth, then stop—lumps are fine, but overworking it turns the topping into glue. I was skeptical until I tried it: the texture stays light and crispy instead of gummy.
- Bake Low and Slow: Cover the casserole with foil for the first 30 minutes at 350°F, then uncover and bake another 15-20 minutes—this prevents the topping from burning before the beans finish cooking. My grandmother swore by this, and she was right: patience keeps the dish from tasting like burnt cheese.
Essential equipment for great mccormick green bean casserole
Baking Dish Essentials
Start with a 9x13-inch glass baking dish—it's the perfect size for even heat distribution and easy serving. I prefer Pyrex because it handles temperature shifts without cracking, but any oven-safe glass dish works.
Grease it lightly with butter or cooking spray to prevent sticking, especially if you're using a double batch. For extra insurance, I sometimes line the bottom with parchment paper for easy removal. 🧑🍳
Mixing Tools
A large mixing bowl (at least 8-quart capacity) is key for combining ingredients smoothly. I use stainless steel because it's durable and won't absorb flavors like plastic. A whisk helps eliminate flour lumps when making the sauce, and a spatula ensures everything transfers evenly to your baking dish.
For measuring, grab a liquid measuring cup for the milk and a dry measuring set for the flour and soup.
Steaming Setup
For the green beans, I recommend a steamer basket that fits comfortably in a pot with 1-2 inches of water at the bottom. If you don't have one, a colander over a pot works fine. Keep the heat at medium-high—you want the beans to steam quickly but stay vibrant.
A timer is crucial here since over-steaming turns them mushy. I set mine for exactly 5 minutes and check immediately after. ⏱️
Butter and Melted Topping
Use a small saucepan to melt the ½ cup butter for the topping. I like to heat it over low heat and stir occasionally to prevent burning. For even melting, I sometimes microwave it in 20-second bursts, stirring between each, until fully liquid.
A baster or spoon helps spread it evenly over the casserole before adding the fried onions. The melted butter creates that signature golden crust—don't skip this step!
Crunchy Topping Tools
For the fried onions, a small bowl helps distribute them evenly. I use a fine-mesh sieve to dust the top with ground black pepper after baking—it catches excess pepper and makes garnishing easier.
If you're making homemade fried onions, a deep fryer or heavy skillet with ½ inch of oil at 350°F works best. Store-bought onions? Just sprinkle them directly from the container for convenience. 🧅
Oven and Temperature Control
Your oven should be fully preheated to 350°F before baking—this ensures even cooking. I use an oven thermometer to confirm accuracy, as home ovens can vary. For best results, place the dish on the middle rack where heat circulates evenly.
If your oven runs hot, reduce the temperature to 325°F and add 5-10 extra minutes to the baking time. A timer reminds me to check for doneness without overbaking. 🌡️
Nutrition facts
Frequently asked questions
Can I make this casserole ahead of time?
This dish actually tastes better the next day as the flavors meld. Assemble it completely, then refrigerate for up to 24 hours before baking. For make-ahead freezer meals, bake the casserole, let it cool completely, then wrap tightly in foil and freeze for up to 3 months. Thaw overnight in the fridge before reheating.
What if I don't have cream of mushroom soup?
No problem! You can substitute with 2 cups of homemade mushroom sauce (sauté mushrooms with garlic, add milk/cream, and blend) or 2 cups of heavy cream mixed with 1 cup of mushroom duxelles. For a vegetarian version, use vegetable broth instead of milk in the sauce. The key is maintaining that creamy, savory base.
How do I keep the fried onions crispy?
The secret is adding them fresh after baking. Sprinkle the fried onions on top right when you take the casserole out of the oven - they'll stay crispy for 10-15 minutes after baking. For extra crunch, broil for 1-2 minutes at the very end, watching closely to avoid burning. If you're making it ahead, store the fried onions separately and add them just before serving.
Can I make this dish gluten-free?
Yes! Swap the all-purpose flour for 2 tablespoons of cornstarch in the sauce mixture. Use gluten-free fried onions and check that your cream of mushroom soup is certified gluten-free. The texture will be slightly different but still delicious. For extra binding, add 1 tablespoon of gluten-free flour blend to the sauce.
Why did my casserole turn out watery?
Watery results usually happen when the green beans weren't drained properly or the sauce wasn't thickened enough. Make sure to drain the beans thoroughly after steaming, and whisk the flour into the soup mixture completely to eliminate lumps. For extra insurance, let the casserole rest for 15-20 minutes after baking - the sauce will thicken as it cools.