This corned beef casserole is a warm and hearty dish that’s perfect for any day of the week. It combines tender corned beef, creamy potatoes, and a sprinkle of cheese on top!
Trust me, the cheesy goodness will have you going back for seconds. I love serving this with a side of green beans for a complete meal—easy and satisfying!
Key Ingredients & Substitutions
Corned Beef: This recipe shines with diced cooked corned beef. If you’re looking for an alternative, try using diced ham or shredded chicken for a different flavor. I’ve found using a good-quality corned beef really enhances the taste.
Potatoes: Parboiled potatoes work well because they stay firm during baking. If you don’t have potatoes, you can use frozen hash browns for a quicker option. I often go for Yukon Gold for their buttery flavor.
Vegetables: Carrots, onions, and celery add great texture and flavor. You can switch these out for whatever veggies you have; bell peppers or peas could also work nicely. Just ensure they’re diced evenly for even cooking.
Cheese: The combination of cheddar and mozzarella adds creaminess. If you’re not a cheddar fan, gouda or Monterey Jack are tasty swaps that also melt well. I always recommend grating your own cheese for the best melt!
Soup: Condensed cream of mushroom is traditional, but you can also use cream of chicken or a homemade cream sauce if you’re feeling adventurous. It really adds to that creamy texture.
Biscuit Dough: The biscuit topping is a fun twist! If you want a healthier option, you might use whole-wheat dough or even make your own biscuit dough from scratch. It’s not too hard, and fresh is always best.
How Do I Get My Biscuit Topping Perfectly Golden and Cooked?
The biscuit topping can be tricky. You want it golden without undercooking. Here’s how to nail it:
- Ensure your oven is properly preheated; this helps the biscuits rise and bake evenly.
- Keep the biscuit pieces evenly spaced. This promotes even cooking and helps them brown nicely.
- Use a non-stick spray or butter for greasing the dish. This prevents sticking and helps the biscuit tops brown.
- Check for doneness; if the casserole is bubbly and the biscuits look pale after 25 minutes, you might need to bake a little longer.
Letting it cool slightly after baking helps the topping firm up too! Enjoy your meal!

How to Make Corned Beef Casserole
Ingredients You’ll Need:
Main Ingredients:
- 3 cups diced cooked corned beef
- 2 cups diced potatoes (parboiled or cooked until just tender)
- 1 cup diced carrots
- 1 cup diced onions
- 1 cup diced celery
Cheese Section:
- 1 cup shredded cheddar cheese
- 2 cups shredded mozzarella cheese
For the Sauce:
- 1 can (10.5 oz) condensed cream of mushroom or cream of celery soup
- 1/2 cup milk
Seasoning and Topping:
- 2 tbsp butter
- 1 tsp garlic powder
- 1 tsp dried thyme or mixed Italian herbs
- Salt and pepper to taste
- 1 cup biscuit dough or canned biscuit dough (cut into small pieces)
- Fresh parsley for garnish (optional)
How Much Time Will You Need?
This hearty corned beef casserole takes about 15 minutes of prep time and around 30 minutes to bake, giving you a total of about 45 minutes to complete. A wonderful time investment for a delicious, filling meal that the whole family will love!
Step-by-Step Instructions:
1. Preheat and Prepare the Dish:
Start by preheating your oven to 375°F (190°C). While the oven is warming up, grease a 9×9-inch or similar-sized baking dish so your casserole won’t stick.
2. Sauté the Vegetables:
In a large skillet, melt the butter over medium heat. Once melted, add the diced onions, celery, and carrots. Sauté them for about 5 minutes until they become nice and soft—this will really enhance their flavor!
3. Combine the Ingredients:
In a large mixing bowl, mix together the sautéed vegetables with the diced corned beef, parboiled or tender potatoes, garlic powder, thyme, salt, and pepper. Stir everything gently to make sure it’s well combined.
4. Make the Creamy Sauce:
In a separate bowl, whisk together the condensed soup and milk until smooth. Pour this creamy mixture into the bowl with the corned beef and vegetables, giving it all another gentle stir to combine everything nicely.
5. Assemble the Casserole:
Transfer the entire mixture into the greased baking dish, spreading it out evenly. Then, sprinkle the shredded cheddar and mozzarella cheese on top to make it extra cheesy.
6. Add the Biscuit Topping:
Finally, top the casserole with small pieces of biscuit dough, placing them evenly over the surface. This will create a delightful biscuit topping as it bakes!
7. Bake the Casserole:
Place the casserole in your preheated oven and bake for about 25-30 minutes. You’re looking for that beautiful golden brown color on the biscuit topping and a bubbly casserole underneath.
8. Cool and Serve:
Once baked, carefully remove the casserole from the oven and let it cool for a few minutes—this will help everything firm up. If you like, garnish with chopped fresh parsley for a pop of color, then serve warm and enjoy a comforting meal!
This dish combines tender corned beef with a wonderful mix of vegetables and a delightful cheesy biscuit topping, creating a meal that’s both satisfying and delicious. Enjoy!
Can I Use Leftover Corned Beef for This Recipe?
Absolutely! Leftover corned beef is perfect for this casserole. Just make sure it’s diced and ready to go. You’ll save time and create a delicious meal from your leftovers!
Can I Add More Vegetables?
Definitely! Feel free to add any vegetables you love or have on hand, like bell peppers, peas, or even green beans. Just make sure to dice them finely for even cooking.
How Should I Store Leftovers?
Store any leftovers in an airtight container in the refrigerator for up to 3 days. For best results, reheat in the oven to keep the biscuit topping crispy, or microwave if you’re in a hurry!
Can I Make This Casserole Ahead of Time?
Yes, you can prepare the casserole a day in advance! Simply assemble it, cover, and refrigerate. When you’re ready to bake, just add a few extra minutes to the cooking time to ensure it’s heated throughout.



