Crack Breakfast Casserole is a delicious, hearty morning dish that combines eggs, cheese, sausage, and a touch of garlic and seasoning to make a warm and satisfying bake. It’s the kind of breakfast that’s easy to prepare ahead of time and comes out bubbly and golden, perfect for feeding a crowd or enjoying leftovers all week long.
I love making this casserole when I have guests over or for those busy weekend mornings when I want something comforting without a lot of fuss. The best part is how all those simple ingredients come together to create something that tastes much more special than the effort it takes. I always add a little extra cheese on top for that melty, golden finish that everyone sneaks bites of before breakfast is even served.
The great thing about this casserole is how flexible it is—feel free to swap in your favorite breakfast meats or veggies to customize it just how you like. I usually serve it with fresh fruit or a side of toast, and it always disappears fast. It’s become a go-to comfort food in my kitchen that makes mornings a little easier and a lot tastier.
Key Ingredients & Substitutions
Eggs: Eggs are the base that holds everything together. Fresh eggs give the best texture, but carton eggs work fine too. For fewer calories, try using just egg whites or a mix.
Breakfast Sausage: I usually use pork sausage for its rich flavor. You can switch to turkey or chicken sausage for a leaner option or even plant-based sausage if you prefer a meat-free version.
Cheddar Cheese: Sharp cheddar adds great flavor and meltiness. If you want a milder taste, try Monterey Jack or mozzarella. For dairy-free, use vegan cheese shreds.
Milk: Whole or 2% milk keeps the casserole creamy. But almond, oat, or soy milk can easily replace it for dairy-free baking.
Hash Browns/Potatoes: These add texture and bulk. Frozen hash browns save time, but fresh diced potatoes also work. You can skip them if you want a lighter dish.
How Can I Get the Perfect Texture Without Overcooking?
Getting a fluffy but fully cooked casserole is all about watching your oven time and temperature. Here’s how:
- Preheat your oven fully to 350°F (175°C) for even cooking.
- Whisk eggs and milk well to combine air, which helps keep the texture light.
- Drain excess fat from sausage fully to avoid greasiness.
- Use a glass or ceramic baking dish so heat spreads evenly.
- Bake uncovered so the top can brown nicely but keep an eye after 45 minutes.
- Check doneness by gently shaking the dish — the center should be just set, not jiggly.
- Let it rest 5-10 minutes after baking to allow the casserole to firm up and slice cleanly.

Equipment You’ll Need
- 9×13-inch baking dish – I prefer this size because it holds all the ingredients evenly and makes serving easy.
- Skillet – for cooking the sausage; a non-stick skillet makes cleanup easier.
- Whisk – helps you mix the eggs, milk, and seasonings smoothly.
- Mixing bowls – for combining ingredients before pouring into the dish.
- Measuring cups and spoons – to get the right amounts for ingredients and seasonings.
Flavor Variations & Add-Ins
- Swap sausage for cooked bacon or ham for a different meaty flavor.
- Add cooked breakfast potatoes or diced vegetables like bell peppers or spinach for more texture and color.
- Use pepper jack or Monterey Jack cheese for a milder or spicier taste.
- Mix in hot sauce or spices like paprika or cumin to add a little kick.
How to Make Crack Breakfast Casserole
Ingredients You’ll Need:
- 12 large eggs
- 1 cup milk
- 1 lb breakfast sausage (pork or your preferred kind)
- 3 cups shredded cheddar cheese
- ½ cup chopped green onions or chives
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 teaspoon salt
- ½ teaspoon black pepper
- 3 cups frozen hash browns or diced potatoes (optional)
- Fresh parsley or chives, chopped (for garnish)
How Much Time Will You Need?
This recipe takes about 15 minutes to prep and 45-55 minutes to bake. If you’re preparing it the night before and baking it from the fridge, plan for an additional 10-15 minutes of baking time.
Step-by-Step Instructions:
1. Prepare Your Oven and Baking Dish:
Preheat your oven to 350°F (175°C). Grease or spray a 9×13-inch baking dish so the casserole doesn’t stick.
2. Cook the Sausage:
In a large skillet over medium heat, cook the breakfast sausage until it’s browned and cooked through. Break it up into small pieces as it cooks. Once done, drain any extra grease and set the sausage aside.
3. Mix Eggs and Seasonings:
In a large mixing bowl, whisk the eggs, milk, garlic powder, onion powder, salt, and pepper until everything is well combined and smooth.
4. Combine Casserole Ingredients:
Stir the cooked sausage, shredded cheddar cheese, and chopped green onions into the egg mixture. If you’re using hash browns or diced potatoes, fold them in now too.
5. Bake the Casserole:
Pour the entire mixture evenly into your prepared baking dish. Place it in the oven and bake for 45-55 minutes. You’ll know it’s ready when the casserole is set in the middle and the top is golden brown.
6. Cool and Serve:
Take the casserole out of the oven and let it cool for a few minutes. Garnish with fresh chopped parsley or chives. Cut into squares and serve warm. Enjoy your delicious, hearty breakfast!
Pro Tip: If you want, you can prepare this casserole the night before and keep it covered in the fridge. Just add about 10-15 minutes to the baking time if baking it cold.
Can I Use Frozen Sausage or Cooked Bacon Instead of Breakfast Sausage?
Yes! If using frozen sausage, thaw it completely before cooking for even browning. Cooked bacon works great too—just chop it up and fold it in with the other ingredients.
Can I Make Crack Breakfast Casserole Ahead of Time?
Absolutely! Prepare the casserole the night before, cover it tightly, and refrigerate. When you’re ready to bake, increase the baking time by 10-15 minutes to ensure it’s heated through.
How Should I Store Leftovers?
Store any leftovers in an airtight container in the fridge for up to 3-4 days. Reheat individual portions in the microwave or oven until warmed through.
Can I Add Vegetables or Use Different Cheeses?
Definitely! Feel free to add diced bell peppers, spinach, or mushrooms for extra flavor and nutrition. You can also swap cheddar for mozzarella, pepper jack, or your favorite cheese to customize the taste.
