Looking for a hearty, easy-to-make dinner that’s budget-friendly, filling, and a guaranteed family favorite? This Hamburger Green Bean Casserole checks all the boxes. With savory ground beef, tender green beans, a creamy mushroom base, melty cheddar cheese, and the crunch of golden French fried onions, this dish is pure comfort in every bite.

Perfect for busy weeknights, potlucks, or cozy Sunday dinners, this casserole brings together pantry staples in a way that’s both nostalgic and totally satisfying.

🍽️ Why You’ll Love This Casserole

One-pan simplicity: Just brown the beef, mix the ingredients, bake, and serve.
Comfort food classic: Creamy, cheesy, and full of flavor.
Customizable: Swap green beans for mixed vegetables or ground turkey instead of beef.
Kid-approved: Cheesy topping and crispy onions make it irresistible.

📝 Ingredients You’ll Need

Here’s what you’ll need to bring this easy casserole together:

1 pound ground beef – Juicy and flavorful, it forms the heart of the dish.
1 can (15 oz) green beans, drained – For texture, color, and veggie goodness.
1 can (10.5 oz) cream of mushroom soup – Adds that creamy, savory base.
½ cup milk – Helps loosen the soup and create a smooth sauce.
1 cup shredded cheddar cheese – Melty, sharp, and delicious.
1 cup French fried onions – Crunchy topping that seals the deal.
1 tsp garlic powder – Adds depth and warmth.
1 tsp onion powder – Enhances the savory flavor.
Salt and pepper, to taste – To round out the seasoning.

⏱️ Quick Overview

Prep Time: 10 minutes
Cook Time: 35 minutes
Total Time: 45 minutes
Servings: 6

👨‍🍳 Step-by-Step Instructions

1. Preheat Your Oven

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

2. Brown the Ground Beef

In a large skillet over medium heat, cook 1 pound of ground beef, breaking it up with a spatula. Cook until browned and fully done. Drain excess fat to keep your casserole from becoming greasy.

3. Mix the Casserole Base

In a large bowl, combine the cooked beef with:

Drained green beans
Cream of mushroom soup
Milk
Garlic powder
Onion powder
Salt and pepper

Stir until the ingredients are well mixed and coated with the creamy base.

4. Transfer to Baking Dish

Grease a 9×13-inch casserole dish and spread the mixture evenly into the dish using a spatula.

5. Add the Cheese

Sprinkle 1 cup of shredded cheddar cheese evenly over the top of the casserole.

6. Bake

Place the dish in your preheated oven and bake for 25 minutes, or until the cheese is melted and bubbly.

7. Finish with Crispy Onions

Remove the casserole from the oven and sprinkle the French fried onions on top. Return to the oven and bake for an additional 5–10 minutes, or until the onions are golden and crispy.

🔁 Variations and Substitutions

Swap the meat: Use ground turkey or chicken for a leaner version.
Make it low-carb: Use fresh green beans or substitute with riced cauliflower.
Go extra cheesy: Mix some cheese into the filling for even more gooey goodness.
Add mushrooms or corn: To boost the veggie content.

🥗 What to Serve With It

This casserole is a full meal on its own, but here are some great sides:

Buttered rolls or cornbread
Simple side salad
Steamed carrots or roasted Brussels sprouts

📦 Storage & Reheating Tips

Refrigerate:
Let leftovers cool completely and store in an airtight container in the fridge for up to 3–4 days.

Reheat:
Warm in the microwave or oven at 350°F until heated through. Cover with foil if you don’t want the onions to get too dark.

Freeze:
You can freeze the unbaked casserole (without fried onions) for up to 2 months. Thaw overnight, then bake as directed, adding the onions at the end.

💬 Final Thoughts

This Hamburger Green Bean Casserole is the kind of no-fuss, crowd-pleasing meal that deserves a regular spot on your dinner rotation. It’s cozy, flavorful, affordable, and comes together in under an hour — a true weeknight win.

Whether you’re cooking for picky eaters, hungry teenagers, or just yourself, this classic casserole delivers satisfying flavor with every bite.