Ground beef, green beans, thinly sliced potatoes, and mushroom sauce baked under cheddar, with tips for tender potato layers.

Southern Beef Green Bean Potato Casserole

Name: Southern Beef Green Bean Potato Casserole
Prep time: 20 min
Cook time: 1 h 20 min
Total time: 1 h 50 min
Yield: 6 servings
Ingredients: 1 pound ground beef; 1 can (15 ounces) green beans, drained; 2 pounds potatoes, peeled and sliced 1/8 inch thick; 1 can (10.5 ounces) condensed cream of mushroom soup; 3/4 cup milk; 1 cup shredded cheddar cheese; 1 medium onion, chopped; Salt and pepper, to taste; 1 tablespoon olive oil; Cooking spray, for the dish

By Corinne Griffith

October 16, 2026 4 Min Read

Jump to Recipe

Southern beef green bean potato casserole layers seasoned ground beef, tender potatoes, and green beans with a creamy mushroom sauce. Cheddar goes on near the end for a melted, golden finish.

This version uses canned green beans and condensed soup for convenience. The beans will be soft rather than crisp, while a tightly covered first bake gives the potato slices time to become tender.

Why This Recipe Works

The beef is cooked before assembly, so the oven stage can focus on softening the potatoes and heating the layers. Mixing the soup with milk makes it easier to distribute through the dish instead of leaving thick patches.

A consistent potato slice is more important than a rigid timer. Keep the foil sealed until a knife moves through the middle layers with little resistance, then finish the cheese uncovered.

Ingredients and Preparation

1 pound ground beef
1 can (15 ounces) green beans, drained
2 pounds potatoes, peeled and sliced 1/8 inch thick
1 can (10.5 ounces) condensed cream of mushroom soup
3/4 cup milk
1 cup shredded cheddar cheese
1 medium onion, chopped
Salt and pepper, to taste
1 tablespoon olive oil
Cooking spray, for the dish

Potatoes: Measure by weight rather than relying on four potatoes of unknown size. Russets give a soft, starchier texture; Yukon Gold potatoes hold their shape a little more. Thin, even slices work with either.

Beans and sauce: Drain the canned beans well. Use the condensed soup straight from the can with only the listed milk, not the full soup-can dilution for serving it as soup. Taste seasoning cautiously because the soup and cheese contain salt.

How to Make Southern Beef Green Bean Potato Casserole

Step 1

Heat oven to 350 degrees F. Grease a 9×13-inch dish. Slice potatoes evenly 1/8 inch thick.

Step 2

Soften onion in oil 3 to 4 minutes. Add beef; crumble and cook to 160 degrees F. Drain excess fat.

Step 3

Whisk condensed soup with milk. Layer half the potatoes, half the beef and beans, and half the sauce. Repeat, spreading sauce evenly.

Step 4

Cover tightly with foil. Bake 50 to 65 minutes, until center potatoes are nearly tender; extend covered cooking if needed.

Step 5

Uncover; add cheddar. Bake 15 to 20 minutes until potatoes are fully tender and center reaches 165 degrees F. Rest 10 minutes.

Tips for the Best Texture

Overlap potato slices loosely instead of creating dense stacks in the center. Spread half of each filling ingredient in each layer so the instructions do not use all the beef before the second layer begins.

If the potatoes remain firm, cover again and keep baking. A brown top does not mean the lowest potato layer is done. Adding cheese only after the covered stage reduces the chance of a dark surface over undercooked potatoes.

Let the casserole rest before serving. It will still be creamy and spoonable rather than a firm slice, but the sauce settles slightly as it cools.

Timing and Doneness

Allow about 20 minutes to prepare and up to 80 minutes for stovetop and oven cooking, followed by a 10-minute rest. The potato thickness and starting temperature can extend the bake.

Cook ground beef to 160 degrees F before assembly. Check that the finished casserole reaches 165 degrees F in the center as well as having tender potatoes. The FoodSafety.gov temperature chart distinguishes ground meat and casserole temperatures.

Serving Ideas and Variations

Serve with a green salad, sliced tomatoes, or another light vegetable. The dish already contains beef, starch, and beans, so it does not need another rich side.

A little garlic powder or thyme can season the beef. For fresh green beans, cook them until nearly tender and drain before adding; raw beans will not behave like the canned version.

For more meals with similar ingredients, try country ham green bean potato stacks, golden beef potato crust supper pie.

Make-Ahead, Storage, and Reheating

Prepare the beef and onion ahead and chill promptly. Whisk the sauce separately and slice potatoes close to assembly. A casserole assembled with chilled ingredients needs additional oven time; check the middle rather than using the warm-assembly timing as a guarantee.

Refrigerate cooked portions within 2 hours, or within 1 hour above 90 degrees F. Use shallow containers and keep at 40 degrees F or below. Use within 3 days, sooner when an ingredient was already near the end of its safe storage time. Making a new dish does not reset the age of previously cooked meat or rice.

Reheat leftovers to 165 degrees F in the center, checking more than one spot in a thick portion. Cover portions loosely in the oven, or microwave in intervals and rotate for even heating. The USDA leftovers guide explains prompt cooling and safe reheating.

For longer storage, freeze cooled individual portions airtight for up to 2 months for quality. Thaw in the refrigerator before reheating. The dairy sauce may separate slightly and potatoes may soften after thawing.

Frequently Asked Questions

Can I use raw ground beef?

No. Brown and fully cook the beef before layering it in this recipe.

Why add milk to the soup?

It makes the condensed soup spreadable enough to coat the potato layers.

Can I omit the cheese?

Yes. Keep the same tenderness and center-temperature checks.

Why are the potatoes still crunchy?

Slices may be too thick or the foil may not have been sealed. Continue covered baking before browning.

Final Serving Notes

Serve warm after the rest, with a broad spoon that reaches through all the layers. Tender potatoes, evenly spread sauce, and well-drained beans keep the casserole comforting without a watery bottom.