Crack Breakfast Casserole is the ultimate morning dish that’s packed with cheesy, eggy goodness and layers of crispy bread and flavorful sausage. It’s the kind of breakfast that’s hearty enough to keep you full and happy all day. The cheese melts beautifully over the eggs and sausage, making every bite rich and satisfying.
I love making this casserole when I have a bunch of people over for brunch because it’s simple to prepare ahead of time, and everyone always asks for seconds. My little tip is to let it sit for a few minutes after baking — it helps everything set up nicely so you can slice it without it falling apart. Plus, it’s fun to experiment with adding veggies like bell peppers or onions if you want a little extra flavor.
Serving this with a side of fresh fruit or a warm cup of coffee makes breakfast feel like a special treat any day of the week. It brings everyone together at the table, and I always find myself looking forward to leftovers the next morning. This casserole is a cozy, comforting dish that turns breakfast into a celebration.
Key Ingredients & Substitutions
Breakfast Sausage: This adds great flavor and heartiness. You can use pork or turkey sausage. For a vegetarian option, try plant-based sausage or cooked mushrooms instead.
Eggs & Milk: Eggs give the casserole structure and creaminess. Whole milk makes it rich, but you can swap for almond or oat milk for a lighter, dairy-free version.
Hash Browns: Frozen hash browns save prep time and crisp up nicely in the oven. If you prefer, you could use cubed roasted potatoes or fresh shredded potatoes.
Cheese: Sharp cheddar is classic for a tangy, melty effect. Mixing in mozzarella adds gooey stretchiness. Feel free to swap with Monterey Jack or Colby if cheddar isn’t available.
How Do You Make Sure the Casserole Holds Together When Slicing?
Letting the casserole rest after baking helps it set and keeps it from falling apart. Here’s what I recommend:
- Remove the casserole from the oven and let it cool for at least 10 minutes before cutting.
- This resting time lets the eggs fully firm up and the cheese settle in.
- Cut with a sharp knife and clean between slices to keep neat edges.
- If you want it firmer, you can also prepare it the night before and chill it in the fridge, then bake it the next morning.
Equipment You’ll Need
- 9×13-inch baking dish – Perfect for holding all the layers and baking evenly.
- Skillet – To cook the sausage and drain excess fat easily.
- Whisk – For blending the eggs, milk, and seasonings smoothly.
- Measuring cups and spoons – To ensure accurate ingredient quantities.
- Large mixing bowl – To combine the eggs, milk, and spices before pouring over the layers.
Flavor Variations & Add-Ins
- Swap sausage for cooked bacon or ham for different savory flavors.
- Mix in sautéed vegetables like bell peppers, spinach, or onions to add color and nutrients.
- Add hot sauce or cayenne pepper to spice things up a bit.
- Use a different cheese like Monterey Jack or pepper jack for a milder or spicy kick.
Crack Breakfast Casserole
Ingredients You’ll Need:
Main Ingredients:
- 1 lb breakfast sausage (pork or turkey)
- 6 large eggs
- 2 cups whole milk
- 1/2 teaspoon salt
- 1/2 teaspoon black pepper
- 4 cups frozen hash brown potatoes, thawed
- 2 cups shredded sharp cheddar cheese
- 1/2 cup shredded mozzarella cheese (optional)
- 1 teaspoon garlic powder
- 1/2 teaspoon onion powder
- Fresh parsley for garnish (optional)
How Much Time Will You Need?
This recipe takes about 15 minutes to prep, plus 45-50 minutes to bake. You’ll also want to allow about 10 minutes of resting time after baking to help the casserole set before slicing.
Step-by-Step Instructions:
1. Prepare Your Baking Dish and Sausage:
Preheat your oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish. In a skillet over medium heat, cook the breakfast sausage, breaking it into small pieces as it cooks. When browned and cooked through, drain the excess fat.
2. Mix the Egg Mixture:
In a large bowl, whisk together the eggs, whole milk, salt, black pepper, garlic powder, and onion powder until everything is well blended.
3. Assemble the Casserole:
Spread the thawed hash browns evenly across the bottom of your prepared baking dish. Sprinkle the cooked sausage evenly over the hash browns. Pour the egg mixture evenly over the sausage and potatoes. Finally, sprinkle the shredded cheddar cheese and mozzarella (if using) on top.
4. Bake and Rest:
Bake the casserole uncovered for 45-50 minutes. Look for the eggs to set in the center and the cheese to be melted, bubbly, and golden brown. Once done, remove from the oven and let it rest for about 10 minutes to firm up for easy slicing.
5. Garnish and Serve:
Optionally sprinkle with fresh parsley for a nice touch of color and freshness. Serve warm and enjoy your delicious, cheesy Crack Breakfast Casserole!
Can I Use Frozen Sausage for This Recipe?
Yes, but make sure to fully thaw the sausage before cooking. Thaw it overnight in the fridge or use the defrost setting on your microwave, then cook as usual.
Can I Prepare This Casserole Ahead of Time?
Absolutely! Assemble the casserole the night before, cover it tightly, and refrigerate. Bake it fresh in the morning—just add an extra 5-10 minutes to the baking time if starting from cold.
How Should I Store Leftovers?
Store leftovers in an airtight container in the fridge for up to 3 days. Reheat slices gently in the microwave or oven until warmed through.
Can I Add Vegetables to the Casserole?
Yes, adding sautéed veggies like bell peppers, onions, or spinach is a great way to boost flavor and nutrition. Just cook them first to remove excess moisture before layering.