Overnight Slow Cooker Breakfast Casserole Perfect for Easy Meal Prep

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Grace Mueller
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Benefits and Advantages of crockpot breakfast casserole

The crockpot breakfast casserole is a standout recipe for busy mornings due to its ease and convenience. With minimal hands-on time, you simply layer ingredients in the slow cooker and let it work while you focus on other priorities. This approach not only saves time but also reduces stress on hectic days. Nutritionally, it’s packed with protein from eggs and breakfast meat, alongside vitamins and fiber from vegetables, making it a wholesome meal to start the day.

Slow cooking preserves the moisture and enhances flavors, ensuring a tender, flavorful casserole every time. Its versatility makes it easy to customize for dietary preferences, whether you want vegan, gluten-free, or lower-calorie versions. The dish is perfect for meal prepping, feeding a crowd, or easy weekend breakfasts, combining heartiness and nutrition effortlessly.

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Essential Ingredients for crockpot breakfast casserole

  • 30 to 32 oz frozen shredded hash browns (regular or Southwestern style)
  • 1 lb cooked breakfast meat (sausage, bacon, or ham), browned and drained or crisped
  • 8 oz shredded cheddar cheese
  • 8 oz shredded mozzarella or Colby jack cheese (or a combination)
  • 3 chopped green onions
  • Optional: 1 small white onion, finely diced (about ½ cup)
  • Optional: 1 red bell pepper, diced
  • Optional: 1 green bell pepper, diced
  • 12 large eggs
  • ½ to 1¼ cups milk (any type, including almond milk; use ½ cup for typical consistency or up to 1¼ cups for creamier texture)
  • ½ teaspoon salt
  • ¼ to 1 teaspoon black pepper
  • Optional seasonings: 1½ teaspoons dry mustard powder, 1 teaspoon garlic powder

These ingredients create a balanced, protein-rich, and flavorful casserole with a satisfying mix of textures and tastes.

crockpot breakfast casserole

Dietary Substitutions to Customize Your crockpot breakfast casserole

To tailor the crockpot breakfast casserole to different diets, several substitutions are available:

  • Vegan: Replace eggs with prepared tofu or chickpea flour mixtures, use plant-based breakfast sausage, and swap dairy milk and cheese for plant-based alternatives.
  • Gluten-Free: Use gluten-free bread or omit bread cubes entirely and ensure all other ingredients, including sausage and seasonings, are gluten-free certified.
  • Low Calorie: Substitute whole eggs with egg whites, use low-fat milk and reduced-fat cheese, and consider lean proteins like turkey sausage.
  • Lactose Intolerance: Use lactose-free milk and cheeses, or opt for nut milks and vegan cheese substitutes to avoid dairy discomfort.
  • Heart-Healthy: Swap pork sausage with lean turkey sausage or tempeh and reduce added salt by enhancing flavor with herbs and spices.

These substitutions maintain the casserole’s satisfying qualities while accommodating dietary needs and preferences.

crockpot breakfast casserole

How to Prepare the Perfect crockpot breakfast casserole: Step-by-Step Guide

  1. Prepare the Crockpot: Lightly spray the insert with nonstick spray or line with a slow cooker liner or parchment paper for easy cleanup and removal later.
  2. Layer Base: Spread half the frozen shredded hash browns evenly along the bottom of the crockpot.
  3. Add Fillings: Sprinkle half the cooked breakfast meat over the hash browns, followed by half the shredded cheese, chopped green onions, and any optional vegetables like diced onions or bell peppers. Repeat layers, finishing with cheese on top.
  4. Mix Egg Mixture: In a large bowl, whisk together the eggs, milk, salt, pepper, and any optional seasonings such as dry mustard or garlic powder until fully combined.
  5. Pour and Cook: Pour the egg mixture evenly over the layered ingredients in the slow cooker without stirring.
  6. Cook Time: Cover and cook on HIGH for 3 to 4 hours or on LOW for 6 to 8 hours, or until the eggs are fully set and the top is golden. Cooking times may vary by model.
  7. Rest Before Serving: After cooking, uncover and let rest for about 15 minutes to allow excess liquid to evaporate and the casserole to firm up for neat slicing.

This method ensures the casserole cooks evenly and develops great texture and flavor, making it ideal for busy mornings or entertaining.

Mastering crockpot breakfast casserole: Advanced Tips and Variations

Perfecting your crockpot breakfast casserole involves some simple techniques and creative variations to enhance both flavor and texture. Start with freshly shredded cheese rather than pre-shredded for a creamier melt. Toasting frozen hash browns slightly before layering can reduce excess moisture and prevent sogginess.

Consider prepping breakfast meat in advance: cook and drain sausage, bacon, or ham thoroughly to avoid greasiness. Incorporate fresh herbs like thyme or chives to add brightness. For extra nutrition and flavor, add vegetables such as diced bell peppers, mushrooms, or spinach. Layer ingredients carefully rather than mixing, to create distinct pockets of flavor and texture.

For a sweeter twist, add cooked apples with cinnamon or swap traditional cheeses for smoked gouda or pepper jack. Prepping the casserole the night before and refrigerating it allows flavors to meld and simplifies morning routine. Finally, don’t hesitate to experiment with plant-based meats and dairy alternatives to cater to vegan or lactose-intolerant diets while keeping the casserole hearty and satisfying.

How to Store crockpot breakfast casserole: Best Practices

Storing your crockpot breakfast casserole properly will preserve freshness and flavor. After cooking, allow the casserole to cool to room temperature, then transfer it into airtight containers. It will keep in the refrigerator for up to four days, making it ideal for meal prep.

If you want to store it longer, freeze individual portions by wrapping them tightly in plastic wrap and foil or using freezer-safe containers. Frozen casserole portions can be kept for up to three months. When reheating, thaw overnight in the refrigerator and warm thoroughly in the microwave or oven until the center reaches at least 165°F (74°C) for safety.

Using a crockpot liner or thoroughly greasing your slow cooker before baking makes reheating and storing much easier by preventing sticking.

Nutritional Value of crockpot breakfast casserole

NutrientApproximate Amount per ServingHealth Benefit
Calories450–460 kcalSustains energy for the morning
Protein26–31 gSupports muscle maintenance and fullness
Fat27–31 gProvides essential fatty acids; saturated fats from cheese and meat
Carbohydrates17–24 gSupplies energy from hash browns and vegetables
Fiber1–2 gAids digestion through vegetables and potatoes
Cholesterol270–310 mgImportant to monitor for heart health
Sodium790–990 mgFrom seasoning and processed meats; adjust to taste

Choosing lean breakfast meats and reduced-fat cheeses can lower saturated fat intake while maintaining protein levels. Incorporating vegetables boosts vitamin and mineral content, increasing overall nutritional value. For more on egg nutrition, see Health Benefits of Eggs.

crockpot breakfast casserole

FAQs: Frequently Asked Questions About crockpot breakfast casserole

What size slow cooker should I use for a crockpot breakfast casserole and can I adjust the cooking time?

Answer guidance: Explain that a 6-quart slow cooker is commonly recommended, serving about 8-10 people. Include advice about using smaller or larger sizes (such as 8-quart) and how to modify cooking times accordingly. This addresses user concerns about equipment compatibility and portion size.

How long should I cook a crockpot breakfast casserole on low and high settings?

Answer guidance: Provide clear cooking time ranges for both low (7-9 hours) and high (3-4 hours) settings. Mention visual cues like a golden-brown top and set center to help users identify doneness. Address adjustments for different slow cooker sizes and recipe variations.

Can I prepare the crockpot breakfast casserole ahead of time, and what’s the best way to store and reheat leftovers?

Answer guidance: Detail options for prepping ingredients or the full casserole in advance, including refrigeration before cooking or making it the day before and reheating. Cover safe storage times (3-4 days refrigerated, freezing tips) and reheating methods to ensure freshness and food safety.

What types of potatoes and meats work best in crockpot breakfast casseroles, and can I customize the recipe with vegetables or cheese?

Answer guidance: Mention that frozen shredded or diced hash browns are typical but fresh grated potatoes can be used without precooking. Discuss meat options like sausage, bacon, ham, or veggie substitutes. Suggest popular vegetable and cheese variations to suit dietary preferences.

How do I prevent the casserole from sticking to the slow cooker and ensure it holds together when serving?

Answer guidance: Recommend using nonstick spray, slow cooker liners, or parchment paper to ease cleanup and help lifting the casserole intact. Offer tips on ingredient balance (e.g., moisture control) that affect the casserole’s texture and cohesiveness.
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Overnight Slow Cooker Breakfast Casserole Perfect for Easy Meal Prep

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⏰ Wake up to the delicious smell of this Overnight Slow Cooker Breakfast Casserole, perfect for meal preps.
🍳 Loaded with proteins and veggies, it’s an easy way to kickstart your morning with minimal effort!

  • Total Time: 6 hours 25 minutes to 8 hours 25 minutes
  • Yield: 810 servings 1x

Ingredients

Scale

30 to 32 oz frozen shredded hash browns
1 lb cooked breakfast meat (sausage, bacon, or ham)
8 oz shredded cheddar cheese
8 oz shredded mozzarella or Colby jack cheese
3 chopped green onions
Optional: 1 small white onion, finely diced
Optional: 1 red bell pepper, diced
Optional: 1 green bell pepper, diced
12 large eggs
½ to cups milk
½ teaspoon salt
¼ to 1 teaspoon black pepper
Optional seasonings: 1½ teaspoons dry mustard powder, 1 teaspoon garlic powder

Instructions

1. Spray a 6-quart slow cooker with nonstick spray or line it with parchment paper.
2. Layer half the hash browns, half the cooked meat, half the cheese, green onions, and optional vegetables.
3. Repeat the layers, ending with cheese on top.
4. In a bowl, whisk eggs, milk, salt, pepper, and optional seasonings. Pour over layered ingredients in the slow cooker.
5. Cover and cook on HIGH for 3 to 4 hours or LOW for 6 to 8 hours until eggs are set and top is golden brown.
6. Let the casserole rest uncovered for 15 minutes before serving.

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Notes

🥔 Use frozen hash browns straight from the freezer for better texture.
🧀 Avoid pre-shredded cheese for smoother melting and richer flavor.
🥓 Prepare meats ahead, cooking and draining them for ease of use in layers.

  • Author: Brandi Oshea
  • Prep Time: 10 minutes
  • Resting: 15 minutes
  • Cook Time: 6 to 8 hours
  • Category: Breakfast
  • Method: Slow Cooking
  • Cuisine: American
  • Diet: Vegetarian option available

Nutrition

  • Serving Size: 1 slice
  • Calories: 450-460
  • Sugar: 1-2 g
  • Sodium: 790-990 mg
  • Fat: 27-31 g
  • Saturated Fat: 11-13 g
  • Unsaturated Fat: value unavailable
  • Trans Fat: value unavailable
  • Carbohydrates: 17-24 g
  • Fiber: 1-2 g
  • Protein: 26-31 g
  • Cholesterol: 270-310 mg

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