Easy Slow Cooker Corned Beef Hash Casserole

This easy slow cooker corned beef hash casserole transforms a simple pantry staple into a hearty, comforting meal. Made with canned corned beef hash, tender potatoes, melted cheddar cheese, and a creamy egg mixture, it's a convenient dish for breakfast, brunch, or a satisfying family dinner.

With minimal preparation and the convenience of a slow cooker, this cheesy corned beef hash casserole is ideal for busy days. Simply layer the ingredients, let everything cook gently, and enjoy a warm, savory meal with very little hands-on work.

Why You'll Love This Recipe

• Budget-friendly: Uses convenient canned corned beef hash and everyday ingredients.
• Easy preparation: Minimal chopping and no complicated cooking techniques.
• Comforting flavor: Savory beef, potatoes, and melted cheddar cheese.
• Versatile: Great for breakfast, brunch, lunch, or dinner.
• Slow cooker convenience: Perfect for hands-off cooking.

Recipe Information

• Prep Time: 15 minutes
• Cook Time: 3–4 hours on LOW
• Total Time: Approximately 3 hours 15 minutes to 4 hours 15 minutes
• Servings: 6
• Course: Main Course, Breakfast, Brunch
• Cuisine: American
• Method: Slow Cooker

Ingredients

• 2 cans (14 ounces each) corned beef hash, preferably beef-based
• 2 cups frozen diced hash brown potatoes, thawed
• 1 small yellow onion, finely chopped
• 1 small green bell pepper, finely diced
• 1 1/2 cups shredded sharp cheddar cheese, divided
• 4 large eggs
• 1/2 cup whole milk
• 1/4 cup sour cream
• 1/2 teaspoon garlic powder
• 1/2 teaspoon smoked paprika
• 1/4 teaspoon freshly ground black pepper
• 1 tablespoon unsalted butter, for greasing
• 2 tablespoons chopped fresh parsley, optional
• Salt, only if needed

How to Make Slow Cooker Corned Beef Hash Casserole

Step 1: Prepare the Slow Cooker

Lightly grease the inside of a 4- to 6-quart slow cooker with unsalted butter or nonstick cooking spray.

This helps prevent the casserole from sticking and makes serving easier.

Step 2: Add the Corned Beef Hash

Open the cans of corned beef hash and spoon the contents into the slow cooker.

Break up the hash gently with a spoon or spatula, spreading it evenly across the bottom.

Step 3: Add the Potatoes

Scatter the thawed diced hash brown potatoes over the corned beef hash.

Spread them evenly to help the casserole cook consistently.

Step 4: Add the Vegetables

Sprinkle the finely chopped onion and diced green bell pepper over the potato layer.

These vegetables add freshness, color, and a mild savory flavor.

Step 5: Add the Cheese

Sprinkle 1 cup of shredded sharp cheddar cheese evenly over the vegetables.

Reserve the remaining 1/2 cup for the top of the casserole near the end of cooking.

Step 6: Prepare the Egg Mixture

In a medium mixing bowl, whisk together the eggs, milk, sour cream, garlic powder, smoked paprika, and black pepper until smooth.

Because canned corned beef hash is often salty, wait until the finished casserole is ready before adding extra salt.

Step 7: Pour Over the Casserole

Slowly pour the egg mixture over the ingredients in the slow cooker, allowing it to settle between the layers.

Gently press down any exposed potatoes so they are moistened by the mixture.

Step 8: Cook on LOW

Cover the slow cooker with its lid and cook on LOW for approximately 3–4 hours.

The casserole is ready when the potatoes are tender, the center is set, and the egg mixture reaches at least 160°F (71°C).

Slow cooker temperatures vary, so begin checking near the earliest recommended time.

Step 9: Add the Remaining Cheese

During the final 15–20 minutes of cooking, sprinkle the remaining cheddar cheese over the casserole.

Replace the lid and allow the cheese to melt completely.

Step 10: Rest and Serve

Turn off the slow cooker and allow the casserole to rest for approximately 10 minutes before serving.

Garnish with chopped fresh parsley if desired. Spoon into bowls or onto plates and serve warm.

Tips for the Best Corned Beef Hash Casserole

• Choose beef-based corned beef hash: Check the ingredient label if you have specific meat preferences.
• Thaw the potatoes: This helps the casserole heat evenly.
• Don't add too much salt: Corned beef hash and cheddar cheese already contain sodium.
• Use freshly shredded cheese: It generally melts more smoothly.
• Avoid lifting the lid repeatedly: Opening the slow cooker releases heat and can increase cooking time.
• Check the center: Make sure the eggs are fully set before serving.

Delicious Recipe Variations

Spicy Corned Beef Hash Casserole

Add one finely chopped jalapeño or a pinch of cayenne pepper for a little extra heat.

Cheesy Hash Brown Casserole

Increase the cheddar cheese to 2 cups for an extra-rich, cheesy finish.

Corned Beef Hash with Mushrooms

Add 1 cup sautéed sliced mushrooms for an earthy flavor and additional vegetables.

Southwestern Corned Beef Hash

Use pepper Jack cheese instead of cheddar and add diced green chiles for a flavorful twist.

What to Serve with Corned Beef Hash Casserole

This hearty casserole pairs well with fresh, simple side dishes.

• Toasted sourdough bread
• Fresh fruit salad
• Steamed green beans
• Roasted asparagus
• Garden salad
• Buttered toast

Storage and Reheating

Refrigerator

Transfer leftovers to shallow airtight containers and refrigerate within 2 hours. Store for up to 3–4 days.

Freezer

Freeze completely cooled portions in freezer-safe containers for up to 2 months for best quality.

Thaw overnight in the refrigerator before reheating.

Reheating

Reheat individual portions in the microwave or warm in a covered baking dish at 325°F (165°C) until the center reaches 165°F (74°C).

Frequently Asked Questions

Can you cook canned corned beef hash in a slow cooker?

Yes. Canned corned beef hash works well in slow cooker casseroles when combined with potatoes, cheese, and other ingredients.

Do I need to brown the corned beef hash first?

No. Browning is optional for this casserole. Cooking the hash in a skillet first can develop additional flavor, but it isn't necessary.

Can I make this casserole without eggs?

Yes, but the texture will be different. Without eggs, the dish will resemble a cheesy potato and corned beef hash mixture rather than a sliceable casserole.

Can I cook this recipe on HIGH?

LOW is recommended for more even cooking. Cooking on HIGH may cause the edges to overcook before the center sets.

Is corned beef hash already cooked?

Commercial canned corned beef hash is generally fully cooked and shelf-stable before opening. Follow the product label and heat the completed casserole thoroughly.

Final Thoughts

This easy slow cooker corned beef hash casserole is a comforting, budget-friendly recipe made with savory beef, tender potatoes, vegetables, eggs, and melted cheddar cheese.

With minimal preparation and simple ingredients, it's a convenient meal for breakfast, brunch, or dinner that the whole family can enjoy.

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