If your family loves hearty, no-fuss meals that bring everyone back for seconds, this Hamburger Green Bean Casserole needs to be on your menu. It’s cozy, flavorful, and comes together with pantry staples you probably already have on hand. Think creamy mushroom sauce, tender green beans, savory beef, and a cheesy finish — all baked together in one comforting casserole dish.

I originally tried this recipe on a chilly night when I needed something quick, filling, and kid-approved. One bite in, and it instantly earned a spot in our dinner rotation. The best part? It’s so flexible. You can easily tweak it to suit different tastes or dietary needs, and it still turns out delicious every single time.

Whether you’re looking for a weeknight meal, a potluck dish, or a warm and satisfying side for the holidays, this casserole checks all the boxes. Let’s get started by prepping the base of the dish — it’s simple, flavorful, and comes together in minutes.

Ingredients for Hamburger Green Bean Casserole

• 1 lb ground beef (substitute with ground turkey or chicken if preferred)
• 1 small onion, chopped
• 2 cloves garlic, minced
• 2 cups frozen or canned green beans, drained
• 1 can (10.5 oz) cream of mushroom soup
• ½ cup sour cream
• 1 cup shredded cheddar cheese
• 1 tsp salt
• ½ tsp black pepper
• 1 tsp onion powder
• 1 tsp garlic powder
• 1 cup crispy fried onions (optional, for topping)

STEPS: Brown the Beef and Start Building the Flavor

Step 1: Preheat the Oven

Set your oven to 350°F (175°C) so it’s ready once the casserole is assembled.

Step 2: Brown the Ground Beef

In a large skillet over medium heat, cook the ground beef until fully browned. Use a spoon to break it up into small crumbles as it cooks. Drain off any excess grease before moving to the next step.

Step 3: Add Onion and Garlic

Stir in the chopped onion and minced garlic. Cook for 3–4 minutes, until the onions are soft and everything is nicely fragrant.

Layer, Bake, and Serve: Bringing the Casserole Together

Now that your beef, onion, and garlic mixture is cooked and ready, it’s time to pull everything together into one warm, bubbly casserole. This step is where the magic happens — where creamy textures, savory flavors, and melted cheese all meet in one dish that screams comfort food.

One of the best things about this Hamburger Green Bean Casserole is how easy it is to adapt. Want it extra cheesy? Add more cheese. Need to stretch it a bit further? Toss in some cooked rice or pasta. But even in its simplest form, this recipe delivers.

STEPS: Mix, Layer, and Bake

Step 4: Combine the Casserole Ingredients

Add the green beans, cream of mushroom soup, sour cream, half of the shredded cheddar cheese, salt, pepper, garlic powder, and onion powder into the skillet with the beef, onion, and garlic mixture. Stir everything together until well combined and creamy.

Step 5: Transfer to Baking Dish

Grease a 9×13-inch baking dish and pour the mixture in. Use a spatula or the back of a spoon to spread it out evenly so it bakes uniformly.

Step 6: Top and Bake

Sprinkle the remaining shredded cheddar cheese over the top. Bake uncovered in the preheated oven for 20–25 minutes, or until the casserole is bubbling around the edges and the cheese is melted and golden.

Step 7: Add Crispy Onions (Optional)

If you’re using crispy fried onions, sprinkle them on top during the last 5 minutes of baking. This gives them just enough time to get perfectly crunchy without burning.

Tips and Simple Swaps

• Add more veggies: Frozen corn, peas, or chopped mushrooms mix in easily with the green beans.
• Want a little heat? Add a dash of hot sauce or a sprinkle of cayenne pepper to the mix.
• Make it stretch: Stir in a cup of cooked pasta, rice, or diced cooked potatoes to bulk it up.
• Cheese options: While cheddar is classic, Monterey Jack, Colby, or a blend of cheeses also work beautifull

Hamburger Green Bean Casserole FAQ: Answers to Your Most-Asked Questions

You’ve baked up a warm, bubbling dish of comfort — now let’s finish off with some quick answers to the most common questions I get about this Hamburger Green Bean Casserole. Whether you’re prepping ahead, looking to switch up ingredients, or wondering how to store leftovers, I’ve got you covered.

1. Can I make this ahead of time?

Yes! You can fully assemble the casserole (without baking) and keep it covered in the fridge for up to 24 hours. Just bake it as directed when you’re ready — you may need to add 5–10 extra minutes if it’s going in cold.

2. Can I freeze this casserole?

Absolutely. After baking, let it cool completely, then cover tightly and freeze for up to 2 months. To reheat, thaw in the fridge overnight and warm in the oven at 350°F until heated through.

3. What can I use instead of cream of mushroom soup?

If you want to switch it up, try cream of chicken or cream of celery soup. You can also make a quick homemade version with a simple roux (butter, flour, and milk) plus mushrooms.

4. Can I use fresh green beans?

Yes — just blanch them first. Boil for 3–4 minutes, then drain and rinse under cold water before adding to the casserole. This keeps them tender but still vibrant.

5. What if I don’t have sour cream?

Greek yogurt makes a great substitute and adds a slight tang. You can also use cream cheese (softened and thinned with a bit of milk) for a richer version.

6. Are crispy fried onions necessary?

Not at all, but they do add a great crunch and flavor on top. You can skip them, use breadcrumbs mixed with a little butter, or even try crushed crackers for a different kind of topping.

Conclusion: A Comfort Classic the Whole Family Will Love

This Hamburger Green Bean Casserole is proof that simple ingredients can come together to make something truly satisfying. It’s hearty, easy to customize, and perfect for both everyday dinners and make-ahead meals. Whether you keep it classic or add your own twist, this dish delivers every time.

If you try it — and I hope you do — I’d love to hear how it turned out! Share your own variations or tips in the comments and let’s keep the family favorites coming.

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