Name: One-Pan Ground Beef and Green Bean Casserole
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: American
Ingredients: 1 lb ground beef; 2 cups green beans; 1 cup onion, diced; 1 cup mushrooms; 3 tsp minced garlic; 1/4 cup beef or chicken broth; 1/3 cup sour cream; 2 Tbsp cream cheese; 1/2 tsp sea salt; 1/2 tsp ground black pepper; 1/2 tsp coconut aminos; 2 cups Colby jack cheese, shredded; 1/8 tsp dried thyme

This hearty one-pan meal combines savory ground beef with fresh green beans and mushrooms in a creamy sauce. It is a fast, low-carb dinner option that requires minimal cleanup and provides a satisfying blend of protein and vegetables.

List of ingredients

1 lb ground beef – use 80/20 for flavor or lean for less fat.
2 cups green beans – trimmed and cut into bite-sized pieces.
1 cup onion – finely diced.
1 cup mushrooms – sliced or chopped.
3 tsp minced garlic – fresh is preferred for maximum aroma.
1/4 cup beef or chicken broth – adds depth to the sauce.
1/3 cup sour cream – provides a creamy, tangy base.
2 Tbsp cream cheese – helps thicken the sauce and adds richness.
1/2 tsp sea salt – adjust to taste.
1/2 tsp ground black pepper – for a mild spicy kick.
1/2 tsp alcohol-free Worcestershire sauce – enhances the savory beef flavor.
2 cups Colby jack cheese – shredded; reduce to 1 cup for a lighter version.
1/8 tsp dried thyme – adds a subtle earthy note.

step-by-step instructions

Brown the beef: In a cast-iron skillet, cook the ground beef on medium heat until browned, about 5 minutes. Remove the ground beef and drain grease, leaving 1 Tbsp of the grease in the pan to sauté the vegetables in.
Sauté the onions: In the same skillet, cook the chopped onions over medium heat until they start to soften, about 3 minutes.
Add mushrooms: Incorporate the mushrooms into the pan and cook for an additional 2 minutes.
Cook vegetables: Add the green beans, garlic, and chicken broth. Cook for 2-3 more minutes until the green beans and other vegetables have softened.
Create the creamy base: Turn the heat down to medium-low and stir in the cream cheese first, followed by the sour cream.
Combine ingredients: Add the cooked beef back into the pan along with the salt, pepper, dried thyme, and alcohol-free Worcestershire sauce. Stir gently to combine all components.
Add cheese: Sprinkle the shredded Colby jack cheese evenly over the top of the mixture.
Melt the cheese: Place the entire dish in the oven and broil for 2 minutes until the cheese is browned and melted. Alternatively, add a lid to the skillet and cook on the stovetop for 3-4 minutes until the cheese melts.

Protein Customization Options

Using Lean Ground Beef

If you use 90% or 93% lean beef, you may find there is not enough natural grease left in the pan. In this case, add 1 tablespoon of olive oil or butter before sautéing the onions. This prevents the vegetables from sticking and ensures they brown properly.

Substituting with Ground Turkey

Ground turkey is a lighter alternative that works well in this casserole. Since turkey is leaner than beef, you will definitely need to add a cooking oil to the pan. Ensure you brown the turkey thoroughly to develop a deep flavor before removing it from the skillet.

Using Ground Bison

Ground bison is a nutrient-dense option that is naturally lean. It has a slightly sweeter and richer taste than beef. Follow the same cooking instructions, but be careful not to overcook the meat as bison can become dry more quickly than beef.

Vegetable Preparation Tips

Fresh Green Bean Processing

When using fresh green beans, wash them thoroughly and snap off the stem ends. Cutting them into 1-inch pieces ensures that they cook evenly and fit well on a spoon. Fresh beans provide the best snap and color to the final dish.

Handling Frozen Green Beans

If using frozen green beans, it is best to thaw them slightly or rinse them under warm water. Frozen vegetables release more water during cooking, so you may need to simmer the mixture for an extra minute. Avoid overcooking them to prevent the beans from becoming mushy.

Managing Canned Green Beans

Canned green beans are already soft, so they require much less cooking time. Drain and rinse them well to remove excess sodium from the canning liquid. Add them at the very end of the vegetable sauté phase just to heat them through.

Selecting the Best Mushrooms

White button mushrooms are standard, but cremini or baby bella mushrooms offer a deeper, earthier flavor. Slice them uniformly so they sauté at the same rate. Sautéing them until they release their moisture prevents the casserole from becoming too watery.

Dairy and Cheese Modifications

Reducing Overall Fat

To make a lighter version, substitute full-fat sour cream and cream cheese with Greek yogurt or low-fat alternatives. Be aware that low-fat dairy may have a different consistency and may not thicken the sauce as effectively. You can add a pinch more thyme to compensate for the flavor loss.

Benefits of Shredding Your Own Cheese

Buying a block of Colby jack and shredding it yourself is highly recommended. Pre-shredded cheeses are coated in potato starch or cellulose to prevent clumping in the bag. Freshly shredded cheese melts much smoother and provides a better stretch.

Alternative Creamy Bases

If you do not have cream cheese, a tablespoon of butter mixed with a small amount of flour can create a roux for thickening. Alternatively, a small amount of heavy cream can be used, though the sauce will be less thick. The cream cheese is key for that signature velvet texture.

Equipment Advice for Best Results

Utilizing a Cast-Iron Skillet

A cast-iron skillet is ideal because it transitions seamlessly from the stovetop to the broiler. It retains heat exceptionally well, which helps in browning the beef and melting the cheese evenly. Ensure your skillet is well-seasoned to prevent sticking.

Using a Non-Stick Skillet

If you use a non-stick pan that is not oven-safe, you must transfer the mixture to a baking dish before adding the cheese. Grease the baking dish lightly with oil or butter. This ensures the casserole doesn’t stick to the sides during the broiling process.

Glass and Ceramic Dish Options

For those who prefer glass or ceramic, transfer the cooked mixture to a casserole dish after the creamy base is mixed. Preheating the dish slightly in the oven can help the cheese melt more quickly. Always use oven mitts as these materials hold heat for a long time.

Enhancing the Flavor Profile

Adjusting the Broth Ratio

If you prefer a saucier casserole, increase the broth from 1/4 cup to 1/2 cup. This creates more liquid for the cream cheese and sour cream to emulsify into. It turns the dish into something resembling a beef stroganoff.

Integrating Additional Herbs

While thyme is the primary herb, adding a pinch of dried oregano or parsley can add complexity. Fresh chopped parsley added at the very end provides a bright, fresh contrast to the rich cheese. Avoid adding too many herbs, as they may overpower the beef.

Managing Salt and Pepper Levels

Start with the recommended 1/2 teaspoon of sea salt and taste the mixture before adding the cheese. Depending on the saltiness of your broth and Worcestershire sauce, you may need less. Always add black pepper at the end to keep the flavor sharp.

Storage and Preservation

Refrigeration Guidelines

Store leftovers in an airtight container in the refrigerator for up to 3 to 4 days. Ensure the casserole has cooled slightly before sealing the lid to prevent excess condensation. This keeps the vegetables from getting too soft.

Freezing the Casserole

This dish can be frozen, although the dairy components may separate slightly upon thawing. Freeze in a freezer-safe container for up to 2 months. To prevent freezer burn, wrap the container in foil before placing it in the freezer.

Proper Thawing Instructions

Thaw the frozen casserole in the refrigerator overnight before reheating. Avoid thawing it on the counter to maintain food safety. This allows the ingredients to stabilize before they are exposed to heat again.

Reheating Methods

Oven Reheating for Texture

To maintain the crispiness of the cheese, reheat the casserole in the oven at 325°F. Cover the dish with foil to keep the moisture inside the beef and beans. Remove the foil for the last 5 minutes to re-brown the top.

Microwave Reheating for Speed

For a quick reheat, place a portion in the microwave and add a teaspoon of water or broth. Cover with a damp paper towel to steam the vegetables and keep the meat moist. Heat in 1-minute intervals, stirring in between.

Stovetop Warming

You can reheat the mixture in a skillet over low heat. Add a splash of beef broth to loosen the sauce as it warms. Cover with a lid to ensure the heat penetrates the center of the casserole.

Serving and Pairing Ideas

Complementary Side Dishes

Serve this casserole with a side of cauliflower mash for a complete low-carb meal. A simple side salad with a vinaigrette helps cut through the richness of the cheese and sour cream. Roasted carrots are another excellent vegetable pairing.

Garnish Suggestions

Freshly sliced green onions or chives added after cooking provide a mild onion flavor and a pop of color. A sprinkle of paprika on top of the melted cheese adds a professional look. A dash of hot sauce can be added for those who prefer heat.

Portioning and Serving

This recipe serves approximately 6 people. Use a wide spoon to scoop generous portions, ensuring every serving gets a mix of beef, beans, and mushrooms. Serve immediately while the cheese is still bubbly.

Troubleshooting Common Issues

Preventing a Watery Sauce

If the sauce seems too thin, simmer the mixture for a few extra minutes before adding the dairy. Ensure the mushrooms are well-browned, as they release a lot of water. You can also stir in an extra tablespoon of cream cheese to thicken it.

Avoiding Overcooked Green Beans

To keep the beans tender-crisp, do not over-sauté them in the broth. Add them only when the onions and mushrooms are already soft. If using canned beans, add them at the very last moment.

Fixing Burnt Cheese

If the broiler is too powerful, the cheese can burn before it melts. Keep a close eye on the oven and move the rack to a lower position. If the cheese browns too quickly, switch to the stovetop lid method.

Frequently Asked Questions

Is this dish keto friendly?

Yes, this casserole is keto-friendly as it uses low-carb vegetables and full-fat dairy. By avoiding sugars and starches, it remains low in net carbs. Use block cheese to avoid the cornstarch found in pre-shredded varieties.

Can I double the recipe?

You can double the ingredients, but you will need a much larger skillet or a 9×13 baking pan. When doubling, increase the cooking time for the beef to ensure it browns rather than steams. Be careful not to overcrowd the pan during the vegetable sauté phase.

Can I use a different type of cheese?

While Colby jack is recommended, sharp cheddar or mozzarella are great alternatives. Pepper jack cheese can be used if you want to add a spicy element to the dish. Gruyere is another excellent choice for a more sophisticated flavor.

Is it okay to use pre-cut vegetables?

Yes, using pre-cut onions and trimmed green beans is a great way to save time. Just ensure they are fresh and not sitting in liquid. If the pre-cut vegetables seem damp, pat them dry before adding them to the skillet.