There is something magical about waking up to a warm, savory breakfast that has been slowly cooking all night. This Crockpot Egg Breakfast Casserole fills the kitchen with the cozy smell of sausage, peppers, and melting cheese long before anyone gets out of bed. The texture turns out tender and fluffy, and every slice feels like a comforting morning hug.
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I have made this version again and again, especially for holiday mornings or busy weekends. When you lift the lid and see the layers set into a golden, steamy casserole, it feels like such a win. This crockpot egg breakfast casserole comes together easily, and it is the kind of meal that lets you ease into the day. Ready to make it together?
Why You Will Love This Recipe
- Hands off and cooks while you sleep
- Feels like a classic diner breakfast with layers of hash browns, sausage, and cheese
- Naturally gluten free and family friendly
- Easy to adapt with vegetables or different cheeses
- Works for brunch, potlucks, or meal prep
- Cozy flavor without any morning stress
INGREDIENTS
- 4 cups frozen shredded hash browns, thawed
- ¼ teaspoon salt
- ¼ teaspoon black pepper
- 1 pound lean breakfast sausage, cooked and crumbled
- 2 cups shredded cheddar cheese
- 1 cup diced yellow onion
- 2 cups diced bell peppers (1 red and 1 green)
- 12 large eggs
- 1 ½ cups milk
- 1 ½ tablespoons minced garlic
- 1 teaspoon dry mustard
- 1 tablespoon chopped chives for garnish, optional
Ingredient Notes and Substitutions
- Hash browns: Shredded works best for soft, layered texture. Cubed potatoes give a heartier bite.
- Sausage: Turkey or chicken sausage keeps it lighter and still flavorful.
- Milk: Whole milk creates the softest custard, but 2 percent works well too.
- Cheese: Try pepper jack if you like a mild kick or a blend for richer flavor.
- Vegetables: Mushrooms, spinach, or zucchini fit right into the layers.
INSTRUCTIONS
- Spray a 6 to 8 quart crockpot with nonstick cooking spray so the casserole releases easily.
- Spread 2 cups of thawed hash browns in an even layer across the bottom. Season with salt and pepper.
- Add half of the cooked sausage on top of the potatoes.
- Sprinkle 1 cup of shredded cheddar over the sausage.
- Add a layer of diced onions and peppers.
- Repeat all layers and finish with the remaining cup of cheese.
- In a large bowl, whisk together the eggs, milk, garlic, and dry mustard until smooth and well blended.
- Pour the egg mixture evenly over the layers, letting it settle into the vegetables and sausage.
- Cover and cook on low for 6 to 8 hours or on high for about 4 hours. The center should look set and no longer glossy.
- Let the casserole rest for a few minutes, then garnish with chives and serve warm.
Pro Tips for Success
Top Tip
- Thaw the hash browns completely for the most even cooking.
- Brown the sausage well for deeper, savory flavor.
- If the edges finish faster than the center, switch the crockpot to warm for the remaining time.
- Use parchment for easier slicing and serving.
- A short rest after cooking helps the layers hold together.
Storage and Reheating
- Store leftovers in an airtight container for up to 3 days.
- Reheat in the microwave in short intervals or warm in a skillet for crisp edges.
- Heat in the oven at 325 degrees F until warmed through.
Make Ahead and Freezing
- Assemble the casserole the night before, refrigerate, and cook in the morning.
- Freeze cooked portions for up to 2 months. They reheat beautifully.
- If freezing the full casserole, cool completely before wrapping tightly.
Tips and Variations
- Lighter version: Use turkey sausage and reduce the cheese slightly.
- Spicy variation: Add jalapeños or use pepper jack cheese.
- Veggie packed: Add mushrooms, spinach, or zucchini to the layers.
- Quick prep: Use pre-diced frozen peppers and onions.
- Serving idea: Spoon a little salsa on top or add a dot of sour cream.
FAQs
Yes. Replace each egg with about ¼ cup of liquid egg. The texture may be slightly firmer.
Vegetables sometimes release moisture. Pat the hash browns dry and sauté the peppers and onions briefly next time.
Yes. It will be ready in about 4 hours, though the edges may brown more quickly.
Yes. Use a smaller slow cooker and reduce the cooking time slightly.
📖 Recipe
Crockpot Egg Breakfast Casserole
- Prep Time: 15 minutes
- Cook Time: 7 hours
- Total Time: 7 hours
- Yield: 9 servings 1x
- Category: Breakfast
- Method: Slow Cooker
- Cuisine: American
Description
Wake up to a cozy, hands-off breakfast with this Crockpot Egg Breakfast Casserole. Loaded with sausage, peppers, cheese, and fluffy eggs, it's perfect for holidays, potlucks, or any morning you want something warm and hearty.
Ingredients
- 4 cups frozen shredded hash browns, thawed
- ¼ teaspoon salt
- ¼ teaspoon black pepper
- 1 pound lean breakfast sausage, cooked and crumbled
- 2 cups shredded cheddar cheese
- 1 cup diced yellow onion
- 2 cups diced bell peppers (1 red and 1 green)
- 12 large eggs
- 1 ½ cups milk
- 1 ½ tablespoons minced garlic
- 1 teaspoon dry mustard
- 1 tablespoon chopped chives for garnish, optional
Instructions
- Spray a 6 to 8 quart crockpot with nonstick cooking spray so the casserole releases easily.
- Spread 2 cups of thawed hash browns in an even layer across the bottom. Season with salt and pepper.
- Add half of the cooked sausage on top of the potatoes.
- Sprinkle 1 cup of shredded cheddar over the sausage.
- Add a layer of diced onions and peppers.
- Repeat all layers and finish with the remaining cup of cheese.
- In a large bowl, whisk together the eggs, milk, garlic, and dry mustard until smooth and well blended.
- Pour the egg mixture evenly over the layers, letting it settle into the vegetables and sausage.
- Cover and cook on low for 6 to 8 hours or on high for about 4 hours. The center should look set and no longer glossy.
- Let the casserole rest for a few minutes, then garnish with chives and serve warm.
Notes
Thaw hash browns completely for even cooking. Brown sausage well for more flavor. For meal prep, freeze cooked portions up to 2 months. To reheat, microwave or warm in skillet. Add mushrooms, jalapeños, or spinach for variation. Use parchment in crockpot for easier slicing.
Nutrition
- Serving Size: 1 slice
- Calories: 320
- Sugar: 2g
- Sodium: 620mg
- Fat: 22g
- Saturated Fat: 9g
- Unsaturated Fat: 11g
- Trans Fat: 0g
- Carbohydrates: 9g
- Fiber: 1g
- Protein: 20g
- Cholesterol: 240mg
Serving Suggestions
Pair this cozy casserole with fresh fruit, warm biscuits, or crispy home fries. It is perfect for relaxed weekend mornings, holiday brunches, or any morning when you want something warm and ready to scoop. It also travels well for potlucks and office breakfasts.
Nutrition and Notes
- Yield: 8 to 10 servings
- Skill Level: Easy
- Approximate Calories: Around 320 per serving
Tested multiple times to keep the center tender and custard like without overcooking.
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