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Slice of crack breakfast casserole on white plate with layers of hash browns, sausage, eggs, melted cheddar, and fresh chives

Crack Breakfast Casserole — The Cozy Morning Recipe You Need

This easy crack breakfast casserole layers crispy golden hash browns, savory browned sausage, a creamy egg custard, and bubbling melted cheddar into one irresistible baking dish. Assemble the night before and bake fresh in the morning — it feeds a crowd and keeps beautifully all week.
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Prep Time 15 minutes
Cook Time 55 minutes
Rest Time 10 minutes
Total Time 1 hour 10 minutes
Servings: 12 squares
Course: Breakfast, Brunch
Cuisine: American
Calories: 310
Ingredients Equipment Method Notes

Ingredients
  

Main Ingredients
  • 1 lb bulk breakfast sausage Not links — bulk ground sausage. Turkey sausage works as a lighter swap.
  • 6 large eggs
  • 1 cup whole milk Do not substitute low-fat — whole milk makes the egg layer creamy and custardy.
  • 3 cups frozen hash browns Thawed completely and patted dry. This step is critical — frozen hash browns make the casserole watery.
  • 1 can (10 oz) condensed cream of mushroom soup Do not add water. Substitute: 1/2 cup sour cream + 1/2 cup chicken broth.
  • 2 cups sharp cheddar cheese, shredded Divided: 1 cup for the middle layer, 1 cup for the top. Freshly grated melts better than pre-bagged.
Seasoning
  • 1 tsp garlic powder
  • 1/2 tsp onion powder
  • salt and black pepper To taste
  • 3-4 dashes hot sauce Optional but highly recommended — adds depth without noticeable heat.

Equipment

  • 9x13-inch baking dish
  • Large skillet
  • Large mixing bowl
  • Wire whisk
  • spatula

Method
 

  1. Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish generously with butter — butter works better than cooking spray as it creates a more reliable non-stick coating.
  2. Cook the sausage in a large skillet over medium heat, breaking it into crumbles as you go. Cook until fully browned with dark edges — no pink remaining. Drain excess fat, leaving just a thin film for flavor. Set aside.
  3. Spread the thawed hash browns in an even layer across the bottom of the prepared baking dish. Press them down lightly with your hands or a spatula so they compact slightly — this helps them form a golden, cohesive base. Season directly with a pinch of salt and garlic powder.
  4. Scatter the cooked sausage crumbles evenly over the hash brown base. Sprinkle 1 cup of the shredded cheddar over the sausage. Do not skip this middle cheese layer — it creates the distinct texture in every bite.
  5. In a large mixing bowl, whisk together the eggs, whole milk, condensed cream of mushroom soup, garlic powder, onion powder, salt, pepper, and hot sauce if using. Whisk until fully smooth and the soup is completely incorporated.
  6. Pour the egg mixture slowly and evenly over the entire pan. You will see it sink down between the sausage crumbles — that is exactly what you want. Take your time pouring to distribute it edge to edge.
  7. Sprinkle the remaining 1 cup of shredded cheddar evenly over the top. Bake uncovered for 45 to 55 minutes, until the center is fully set with no jiggle when you nudge the pan, and the cheese on top is golden brown and bubbling at the edges.
  8. Remove from the oven and let the casserole rest for 10 full minutes before slicing. This rest period is non-negotiable — it allows the egg layer to fully set so the squares slice cleanly. Cut into 12 squares and serve.

Notes

MAKE-AHEAD: Assemble everything through step 6 (the egg pour), cover tightly with plastic wrap, and refrigerate overnight. Pull it out while the oven preheats (about 15 minutes) to take the chill off, then bake as directed.
FREEZER: Slice into individual portions, wrap each tightly in plastic wrap, and freeze for up to 2 months. Thaw overnight in the fridge and reheat in a 350°F oven for 10 to 12 minutes.
STORAGE: Keeps in the fridge for up to 4 days, covered. Reheat in the oven at 350°F for best texture — the microwave works but softens the hash brown crust.
KEY TIPS: Always thaw and pat dry the hash browns before using. Do not rush the sausage browning — the dark edges are where the flavor lives. Use whole milk, not low-fat.
VARIATIONS: Bacon version: replace sausage with 8 strips thick-cut bacon, cooked crispy and crumbled. Veggie version: use sautéed mushrooms, red bell pepper, and spinach. Southwest version: use chorizo, add diced green chiles, use pepper jack cheese, serve with sour cream and salsa.