
This hearty Hamburger Green Bean Casserole has been my go-to solution for busy weeknights when I need a complete meal that satisfies everyone. The combination of savory ground beef, tender green beans, and creamy sauce creates a comforting dish that brings protein and vegetables together effortlessly.
I first created this casserole during a particularly hectic week when my family needed comfort food but I had limited time. Now it's requested at least twice a month and has become our reliable solution when we need something hearty that doesn't require hours in the kitchen.
Ingredients
- 1 pound ground beef. Opt for 80/20 for the best flavor balance. The fat content adds richness to the casserole without making it greasy.
- 1 can (15 oz) green beans drained. The convenience of canned beans makes this truly weeknight friendly. Look for no salt added if watching sodium.
- 1 can (10.5 oz) cream of mushroom soup. This creates the creamy base without any fuss. Choose low sodium varieties if preferred.
- 1/2 cup milk. Whole milk creates the richest texture but any variety works well.
- 1 cup shredded cheddar cheese. Freshly shredded melts better than pre-packaged. Sharp cheddar provides the most flavor impact.
- 1 cup French fried onions. These add the perfect crunchy topping and savory flavor. Store brands work just as well as name brands.
- 1 teaspoon garlic powder. Adds depth without the work of mincing fresh garlic.
- 1 teaspoon onion powder. Provides uniform onion flavor throughout the casserole.
- Salt and pepper to taste. Always adjust according to your preference.
Step-by-Step Instructions
- Preheat the Oven
- Set your oven to 350°F (175°C). This moderate temperature allows the casserole to heat evenly without burning the top before the center is hot.
- Brown the Ground Beef
- In a large skillet over medium heat cook the ground beef thoroughly breaking it into small crumbles with your spatula. This should take about 7 to 8 minutes until no pink remains. Be sure to drain the excess fat which prevents the casserole from becoming greasy.
- Mix the Casserole Base
- In a large mixing bowl combine your cooked ground beef drained green beans cream of mushroom soup milk garlic powder onion powder salt and pepper. Stir everything together until the ingredients are evenly distributed. The mixture should have a creamy consistency that coats all components.
- Prepare the Baking Dish
- Transfer your mixture to a greased 9×13 inch baking dish spreading it out in an even layer. Make sure to push the mixture into the corners for even baking.
- Add the Cheese Layer
- Sprinkle the shredded cheddar cheese evenly across the top of the casserole. This creates a delicious melty layer that will help seal in moisture.
- Initial Bake
- Place the casserole in your preheated oven and bake for 25 minutes or until you see bubbling around the edges and the cheese has completely melted.
- Add Crispy Onion Topping
- Remove the casserole from the oven and evenly distribute the French fried onions across the top. Return it to the oven for another 5 to 10 minutes until the onions turn golden brown and crispy.

The French fried onions are absolutely my favorite part of this casserole. I discovered their magic when my grandmother used to make her famous green bean casserole for holidays. Adding them to this heartier version creates that same nostalgic crunch that makes everyone reach for seconds. My son always tries to pick off extra onions from the top before dinner is served.
Make It Fresh
While canned green beans work perfectly for convenience fresh green beans elevate this dish to restaurant quality. If using fresh trim about 12 ounces of green beans and blanch them in boiling water for 3 minutes before shocking in ice water. This preserves their bright color and gives them the perfect tender crisp texture that contrasts beautifully with the creamy sauce.
Storage and Reheating
This casserole keeps beautifully in the refrigerator for up to 3 days in an airtight container. For best results when reheating cover with foil and warm in a 325°F oven for about 20 minutes until heated through. The microwave works in a pinch but the onion topping will lose its crispness. If you know you'll have leftovers consider setting aside some extra French fried onions to add fresh after reheating.
Easy Variations
This recipe welcomes customization based on what you have on hand. Try adding 1 cup of sliced mushrooms when browning the beef for extra umami flavor. For a spicier version mix in 1/4 teaspoon of cayenne pepper or a tablespoon of diced jalapeños. You can also swap the cheddar for pepper jack cheese to add a subtle heat that complements the creamy sauce beautifully.
Serving Suggestions
While this casserole stands alone as a complete meal I often serve it with a simple side salad dressed with vinaigrette to balance the richness. For heartier appetites warm dinner rolls make the perfect accompaniment for soaking up the savory sauce. During summer months adding a side of fresh sliced tomatoes with a sprinkle of salt creates a refreshing contrast to the warm casserole.
Frequently Asked Questions
- → Can I use fresh green beans instead of canned?
Yes, you can substitute fresh green beans. Blanch them first to achieve the perfect texture before adding them to the casserole.
- → What type of ground beef works best?
Using 80/20 ground beef provides a good balance of flavor and moisture. Leaner options can work but may result in a drier casserole.
- → Can this dish be made ahead?
Absolutely! Assemble the casserole ahead of time, cover it, and refrigerate. Add 5-10 minutes to the baking time if cooking from cold.
- → What can I use instead of cream of mushroom soup?
If you prefer, you can make a homemade creamy sauce or substitute with cream of chicken or celery soup for a different flavor profile.
- → How do I make the topping crispier?
Add the French fried onions during the last 5-10 minutes of baking to prevent them from becoming soggy and keep them golden and crispy.